@charset "UTF-8";.offscreen,.only-icon span{border:0;clip:rect(0 0 0 0);height:1px;margin:-1px;overflow:hidden;padding:0;position:absolute;width:1px}.text-content pre{font-size:18px;font-size:1rem;background:#eee;border:0 solid #3d7e9a;color:#333;margin-top:0;margin-bottom:20px;padding:15px;position:relative;font-family:consolas,monaco,"Andale Mono",monospace;font-style:normal;font-weight:400;line-height:1.5;overflow:auto;direction:ltr!important;text-align:left!important;border-left-width:5px!important;border-right-width:0!important;-moz-tab-size:4;tab-size:4;-moz-hyphens:none;-webkit-hyphens:none;-ms-hyphens:none;hyphens:none}.text-content pre{border-left-width:5px}.text-content html[dir=rtl] pre,html[dir=rtl] .text-content pre{border-left-width:0;border-right-width:5px}.text-content pre>:last-child{margin-bottom:0}.text-content pre>:last-child{padding-bottom:0}.text-content pre p{box-sizing:border-box;width:100%;max-width:100%}.text-content pre p dl,.text-content pre p p,.text-content pre p ul{max-width:100%}.text-content pre code{background-color:transparent;font-style:normal;font-weight:inherit;padding:0}.highlight-spanned.highlight,.text-content h3.highlight-spanned,.text-content h5.highlight-spanned{padding:0;background-color:inherit;color:inherit}.highlight-spanned.highlight a,.text-content h3.highlight-spanned a,.text-content h5.highlight-spanned a{color:inherit}.highlight,.highlight .highlight-span,.text-content h3,.text-content h3 .highlight-span,.text-content h5,.text-content h5 .highlight-span{background-color:#333;color:#fff;font-weight:400;line-height:1.25;padding:0 4px;-webkit-box-decoration-break:clone;box-decoration-break:clone}.highlight .highlight-span a,.highlight a,.text-content h3 .highlight-span a,.text-content h3 a,.text-content h5 .highlight-span a,.text-content h5 a{color:#83d0f2}.highlight .highlight-span a[name],.highlight a[name],.text-content h3 .highlight-span a[name],.text-content h3 a[name],.text-content h5 .highlight-span a[name],.text-content h5 a[name]{color:inherit;text-decoration:none}.highlight .highlight-span code,.highlight code,.text-content h3 .highlight-span code,.text-content h3 code,.text-content h5 .highlight-span code,.text-content h5 code{background-color:rgba(255,255,255,.4)!important;color:#fff!important}.cta-link{-moz-appearance:none;-webkit-appearance:none;appearance:none;font-size:inherit;font-weight:inherit;letter-spacing:inherit;line-height:inherit;background-color:transparent;text-transform:inherit;border:0;padding:0;color:#3d7e9a;position:relative;box-sizing:border-box;display:inline-block;border-bottom:2px solid}.cta-link:focus,.cta-link:hover{text-decoration:underline}.cta-link{padding:10px 30px 10px 0;text-align:left}html[dir=rtl] .cta-link{padding:10px 0 10px 30px;text-align:right}.cta-link .icon-arrow,.cta-link .icon-envelope{position:absolute;top:30%}.cta-link .icon-arrow,.cta-link .icon-envelope{left:auto}html[dir=rtl] .cta-link .icon-arrow,html[dir=rtl] .cta-link .icon-envelope{left:0;right:auto}.cta-link .icon-arrow,.cta-link .icon-envelope{right:0}html[dir=rtl] .cta-link .icon-arrow,html[dir=rtl] .cta-link .icon-envelope{right:auto;left:0}.cta-link .icon-arrow,.cta-link .icon-envelope{transition:right .2s}html[dir=rtl] .cta-link .icon-arrow,html[dir=rtl] .cta-link .icon-envelope{transition:left .2s}.cta-link:focus,.cta-link:hover{text-decoration:none}.cta-link:focus .icon-arrow,.cta-link:hover .icon-arrow{right:-5px}html[dir=rtl] .cta-link:focus .icon-arrow,html[dir=rtl] .cta-link:hover .icon-arrow{right:10px;left:-5px}.cta-link:focus .icon-arrow,.cta-link:hover .icon-arrow{left:auto}html[dir=rtl] .cta-link:focus .icon-arrow,html[dir=rtl] .cta-link:hover .icon-arrow{left:10px;right:auto}.cta-link i[class^=icon-]{margin-top:4px}a,abbr,address,article,aside,audio,b,blockquote,body,canvas,caption,cite,code,dd,del,details,dfn,div,dl,dt,em,fieldset,figcaption,figure,footer,form,h1,h2,h3,h4,h5,h6,header,hgroup,hr,html,i,iframe,img,ins,kbd,label,legend,li,mark,menu,nav,object,ol,p,pre,q,samp,section,small,span,strong,sub,summary,sup,table,tbody,td,tfoot,th,thead,time,tr,ul,var,video{margin:0;padding:0;border:0}address,caption,cite,code,dfn,th,var{font-style:inherit;font-weight:inherit}article,aside,audio,canvas,figcaption,figure,figure img,footer,header,hgroup,main,nav,section,video{display:block}a img{border:0}ol,ul{list-style-type:none}html{background:#fff;color:#333}body{line-height:1.6;font-family:Arial,x-locale-body,sans-serif;letter-spacing:-.00278rem;font-size:18px;font-size:1rem;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}aside{width:48.5%;float:right;background:#eee;padding:20px;margin-left:20px;margin-bottom:20px}aside>:last-child{margin-bottom:0}aside>:last-child{padding-bottom:0}aside h3:first-child,aside h4:first-child{margin-top:0}main{background:#fff;min-height:200px}details{clear:both;display:block;margin-bottom:20px}details{margin-left:20px}html[dir=rtl] details{margin-left:0;margin-right:20px}summary{display:block;cursor:pointer;color:#3d7e9a}summary{margin-left:-20px}html[dir=rtl] summary{margin-left:0;margin-right:-20px}summary h1,summary h2,summary h3,summary h4,summary h5,summary h6{display:inline-block;margin-bottom:0;color:inherit}summary::-webkit-details-marker{display:none}summary:before{display:inline-block;width:20px;color:#3d7e9a}summary:before{content:"▶︎"}html[dir=rtl] summary:before{content:"◀︎"}details[open]>summary{margin-bottom:10px}details[open]>summary:before{content:'\25BC\FE0E'}hr{border-top:3px solid #3d7e9a;height:0;margin:20px 0;box-sizing:border-box;max-width:42rem}h1{font-size:51px;font-size:2.83333rem;font-family:x-locale-heading-primary,zillaslab,Palatino,"Palatino Linotype",x-locale-heading-secondary,serif;line-height:1}h2{font-size:28px;font-size:1.55556rem;font-family:x-locale-heading-primary,zillaslab,Palatino,"Palatino Linotype",x-locale-heading-secondary,serif;line-height:1.2;margin:20px 0}@media all and (min-width:47.9385em){h2{font-size:42px;font-size:2.33333rem}}h3{margin:20px 0;font-size:26px;font-size:1.44444rem;font-family:x-locale-heading-primary,zillaslab,Palatino,"Palatino Linotype",x-locale-heading-secondary,serif;line-height:1.2}h4{margin:30px 0 20px 0;font-size:24px;font-size:1.33333rem;font-family:x-locale-heading-primary,zillaslab,Palatino,"Palatino Linotype",x-locale-heading-secondary,serif;line-height:1.2}h5{margin:10px 0;font-size:18px;font-size:1rem;font-family:x-locale-heading-primary,zillaslab,Palatino,"Palatino Linotype",x-locale-heading-secondary,serif;line-height:1.2}h6{margin:10px 0;font-size:18px;font-size:1rem;font-family:x-locale-heading-primary,zillaslab,Palatino,"Palatino Linotype",x-locale-heading-secondary,serif;line-height:1.2}p{margin-bottom:24px}blockquote{box-sizing:border-box;max-width:42rem;font-size:24px;font-size:1.33333rem;border:3px solid #83d0f2;border-width:3px 0;padding:20px 0;margin-bottom:20px}blockquote>p:last-child{margin-bottom:0}article>blockquote:first-child,article>div:first-child:empty+blockquote,article>p:first-child:empty+blockquote,article>p:first-child:empty+p:empty+blockquote{border-top-width:0;padding-top:0}a{color:#3d7e9a;text-decoration:none}a:active,a:focus,a:hover{text-decoration:underline}a i[class^=icon-]:before{cursor:pointer}a[name]{color:inherit;text-decoration:none}abbr[title]{cursor:help;text-decoration:dotted underline}sup{position:relative;top:-.15em;vertical-align:top}:not(pre)>*>code,:not(pre)>code{background-color:#bbb;background-color:rgba(220,220,220,.5);border-radius:2px;box-decoration-break:clone;font-family:consolas,"Liberation Mono",courier,monospace;padding:0 2px;word-wrap:break-word}:not(pre)>*>code.templateLink,:not(pre)>code.templateLink{padding:1px 2px}.index :not(pre)>*>code,.index :not(pre)>code,.indexListTerm :not(pre)>*>code,.indexListTerm :not(pre)>code{background-color:transparent;padding:0}.toc :not(pre)>*>code,.toc :not(pre)>code{background-color:inherit;color:inherit;font-family:inherit;font-size:inherit;padding:0}.quick-links :not(pre)>*>code,.quick-links :not(pre)>code{background-color:transparent;padding:0}:not(pre)>*>code a,:not(pre)>code a{color:#285c76}@media all and (max-width:47.9375em){h1 code,h2 code,h3 code,h4 code,h5 code,h6 code{word-break:break-all}}kbd{background-color:#eee;border-radius:3px;border:1px solid #b4b4b4;box-shadow:0 1px 1px rgba(0,0,0,.2),0 2px 0 0 rgba(255,255,255,.7) inset;color:#333;display:inline-block;font-family:consolas,"Liberation Mono",courier,monospace;font-size:.85em;font-weight:700;line-height:1;padding:2px 4px;white-space:nowrap}var{font-style:italic}button,input,optgroup,option,select,textarea{font-size:18px;font-size:1rem;font-family:Arial,x-locale-body,sans-serif;letter-spacing:-.00278rem;font-style:normal;font-weight:400}input[type=email],input[type=number],input[type=password],input[type=search],input[type=text],input[type=url],textarea{color:#4c4c4c;background:#fff;border:2px solid #9b9b9b;padding:6px 8px;font-weight:400}input[type=email]::-webkit-input-placeholder,input[type=number]::-webkit-input-placeholder,input[type=password]::-webkit-input-placeholder,input[type=search]::-webkit-input-placeholder,input[type=text]::-webkit-input-placeholder,input[type=url]::-webkit-input-placeholder,textarea::-webkit-input-placeholder{color:#a0a0a0}input[type=email]:-ms-input-placeholder,input[type=number]:-ms-input-placeholder,input[type=password]:-ms-input-placeholder,input[type=search]:-ms-input-placeholder,input[type=text]:-ms-input-placeholder,input[type=url]:-ms-input-placeholder,textarea:-ms-input-placeholder{color:#a0a0a0}input[type=email]::-moz-placeholder,input[type=number]::-moz-placeholder,input[type=password]::-moz-placeholder,input[type=search]::-moz-placeholder,input[type=text]::-moz-placeholder,input[type=url]::-moz-placeholder,textarea::-moz-placeholder{color:#a0a0a0}input[type=email]::placeholder,input[type=number]::placeholder,input[type=password]::placeholder,input[type=search]::placeholder,input[type=text]::placeholder,input[type=url]::placeholder,textarea::placeholder{color:#a0a0a0}textarea{color:#333;font-weight:400}input[type=search]{-moz-appearance:textfield;-webkit-appearance:textfield;appearance:textfield}input[type=search]::-webkit-search-cancel-button,input[type=search]::-webkit-search-decoration,input[type=search]::-webkit-search-results-button,input[type=search]::-webkit-search-results-decoration{display:none}label{cursor:pointer}label.visually-hidden{border:0;clip:rect(0 0 0 0);height:1px;margin:-1px;overflow:hidden;padding:0;position:absolute!important;width:1px}.disabled,[disabled]{pointer-events:none;cursor:not-allowed;opacity:.5}.button,button,input[type=button],input[type=submit]{border:0;cursor:pointer;display:inline-block;line-height:1;font-weight:700;letter-spacing:normal;border:2px solid #9b9b9b;background-color:#fff;padding:5px 11px;color:#4c4c4c;text-decoration:none}.button.neutral,button.neutral,input[type=button].neutral,input[type=submit].neutral{border-color:#3d7e9a;color:#285c76}.button.negative,button.negative,input[type=button].negative,input[type=submit].negative{border-color:#b65456;color:#b65456}.button.positive,button.positive,input[type=button].positive,input[type=submit].positive{min-height:32px;border-color:#4d9f0c;color:#3a7408}.button.transparent,button.transparent,input[type=button].transparent,input[type=submit].transparent{background-color:transparent;border:0;padding-left:0;padding-right:0}.button.link,button.link,input[type=button].link,input[type=submit].link{-moz-appearance:none;-webkit-appearance:none;appearance:none;font-size:inherit;font-weight:inherit;letter-spacing:inherit;line-height:inherit;background-color:transparent;text-transform:inherit;border:0;padding:0;color:#3d7e9a}.button.link:focus,.button.link:hover,button.link:focus,button.link:hover,input[type=button].link:focus,input[type=button].link:hover,input[type=submit].link:focus,input[type=submit].link:hover{text-decoration:underline}.button::-moz-focus-inner,button::-moz-focus-inner,input[type=button]::-moz-focus-inner,input[type=submit]::-moz-focus-inner{margin-top:-1px;margin-bottom:-1px}.button i[class^=icon-],button i[class^=icon-],input[type=button] i[class^=icon-],input[type=submit] i[class^=icon-]{font-size:19px;font-size:1.05556rem}.button i[class^=icon-]:before,button i[class^=icon-]:before,input[type=button] i[class^=icon-]:before,input[type=submit] i[class^=icon-]:before{cursor:pointer}.button:not(.only-icon) i[class^=icon-],button:not(.only-icon) i[class^=icon-],input[type=button]:not(.only-icon) i[class^=icon-],input[type=submit]:not(.only-icon) i[class^=icon-]{float:left;margin-right:10px}html[dir=rtl] .button:not(.only-icon) i[class^=icon-],html[dir=rtl] button:not(.only-icon) i[class^=icon-],html[dir=rtl] input[type=button]:not(.only-icon) i[class^=icon-],html[dir=rtl] input[type=submit]:not(.only-icon) i[class^=icon-]{float:right;margin-right:0;margin-left:10px}.button:active,.button:focus,.button:hover{text-decoration:none}table{margin-bottom:24px}caption{font-weight:700}caption,th{text-align:left}html[dir=rtl] caption,html[dir=rtl] th{text-align:right}iframe,img,video{max-width:100%}img,video{height:auto!important}.icon-only-inline i.icon-beaker,.icon-only-inline i.icon-trash,.icon-only-inline i.icon-warning-sign,.prevnext .icon-arrow-left,.prevnext .icon-arrow-right,.prevnext .icon-arrow-up,.standard-table i.icon-cogs,i.icon-beaker,i.icon-info-sign,i.icon-thumbs-down-alt,i.icon-trash,i.icon-warning-sign{display:inline-block;content:'';background-repeat:no-repeat}i[class^=icon-]{cursor:default;display:inline-block}i[class^=icon-]:before{display:inline-block;text-decoration:none}label i[class^=icon-]:first-child{margin-left:0;margin-right:10px}html[dir=rtl] label i[class^=icon-]:first-child{margin-left:10px;margin-right:0}.icon{fill:currentColor}.icon-arrow,.icon-arrow-left,.icon-arrow-right,.icon-arrow-up,.icon-book,.icon-caret-down,.icon-caret-right,.icon-check-mark,.icon-chevron-down,.icon-chevron-up,.icon-close,.icon-cogs,.icon-exclamation-circle,.icon-exclamation-triangle,.icon-external-link,.icon-eye,.icon-file,.icon-flask,.icon-gear,.icon-globe,.icon-info-circle,.icon-language,.icon-lock,.icon-pencil,.icon-plain-text,.icon-play,.icon-shield,.icon-tags,.icon-undo,.search-icon .icon-search{width:16px;height:16px}.prevnext .icon-arrow-left{background-image:url("/web/20190907003049im_/https://developer.mozilla.org/static/arrows/arrow-left.52215ddfcdd4.svg");background-size:16px;width:16px;height:20px;vertical-align:sub}.prevnext .icon-arrow-up{background-image:url("/web/20190907003049im_/https://developer.mozilla.org/static/arrows/arrow-up.7bcf357a852e.svg");background-size:16px;width:16px;height:20px;vertical-align:sub}.prevnext .icon-arrow-right{background-image:url("/web/20190907003049im_/https://developer.mozilla.org/static/arrows/arrow-right.cbc8b4f075cc.svg");background-size:16px;width:16px;height:20px;vertical-align:sub}i.icon-thumbs-down-alt{background-image:url("/web/20190907003049im_/https://developer.mozilla.org/static/emojis/thumbs-down.63ec272cd3f4.svg");background-size:16px;width:16px;height:20px;vertical-align:bottom}i.icon-beaker{background-image:url("/web/20190907003049im_/https://developer.mozilla.org/static/general/flask.6c6c1a459b56.svg");background-size:16px;width:16px;height:20px;vertical-align:text-bottom}i.icon-warning-sign{background-image:url("/web/20190907003049im_/https://developer.mozilla.org/static/notifications/exclamation-triangle.6d44000df248.svg");background-size:16px;width:16px;height:20px;vertical-align:bottom}i.icon-trash{background-image:url("/web/20190907003049im_/https://developer.mozilla.org/static/general/trash.79fdf785540e.svg");background-size:16px;width:16px;height:20px;vertical-align:text-bottom}i.icon-info-sign{background-image:url("/web/20190907003049im_/https://developer.mozilla.org/static/notifications/info-circle.6f96056ac6bb.svg");background-size:24px;width:24px;height:30px}.icon-only-inline i.icon-beaker{background-image:url(data:image/svg+xml;base64,PHN2ZyBzdHlsZT0iZmlsbDogIzA5ZDsiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgd2lkdGg9IjI2IiBoZWlnaHQ9IjI4IiBhcmlhLWhpZGRlbj0idHJ1ZSI+PHBhdGggZD0iTTIzLjg1OSAyMi42MjVDMjUuMDMxIDI0LjQ4NCAyNC4yMDMgMjYgMjIgMjZINGMtMi4yMDMgMC0zLjAzMS0xLjUxNi0xLjg1OS0zLjM3NUwxMCAxMC4yMzRWNEg5Yy0uNTQ3IDAtMS0uNDUzLTEtMXMuNDUzLTEgMS0xaDhjLjU0NyAwIDEgLjQ1MyAxIDFzLS40NTMgMS0xIDFoLTF2Ni4yMzR6TTExLjY4OCAxMS4yOTdMNy40MzggMThoMTEuMTI1bC00LjI1LTYuNzAzLS4zMTMtLjQ4NFY0aC0ydjYuODEzeiIvPjwvc3ZnPg);background-size:16px;width:16px;height:20px}.icon-only-inline i.icon-warning-sign{background-image:url(data:image/svg+xml;base64,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);background-size:16px;width:16px;height:20px}.icon-only-inline i.icon-trash{background-image:url(data:image/svg+xml;base64,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);background-size:16px;width:16px;height:20px}.standard-table i.icon-cogs{background-image:url("/web/20190907003049im_/https://developer.mozilla.org/static/general/cogs.b0c3ac3f2387.svg");background-size:16px;width:16px;height:20px}.login-link .icon{margin-left:5px;vertical-align:text-bottom}.icon-language{vertical-align:bottom}.page-tags .icon-tags{width:24px;height:24px;vertical-align:bottom}.page-attachments .icon-paperclip,.page-attachments .icon-question-mark,.page-tags .icon-question-mark,.revision-comment-link .icon-question-mark{vertical-align:bottom}.contributors-sub .icon-clock,.contributors-sub .icon-group,div[class*=metadata] .icon-group{margin-right:5px;width:14px;height:14px;vertical-align:middle}.contributors-sub .icon-clock,div[class*=metadata] .icon-clock{width:16px;height:16px}button[type=submit] .icon-check-mark{vertical-align:bottom}.site.github .icon-github{margin-right:5px;vertical-align:bottom}.user-buttons .icon-pencil{margin-right:5px;vertical-align:bottom}.user-buttons .icon-gear{vertical-align:bottom}.user-links .icon-discourse,.user-links .icon-facebook,.user-links .icon-github,.user-links .icon-group,.user-links .icon-linkedin,.user-links .icon-stack-overflow,.user-links .icon-twitter{margin-right:5px;width:21px;height:21px;vertical-align:inherit}.user-links .icon-facebook,.user-links .icon-linkedin{vertical-align:top}.user-links .icon-github,.user-links .icon-twitter{vertical-align:bottom}.attachment .icon-paperclip{width:16px;height:16px;vertical-align:bottom}.search-results-filters .icon-checkbox,.search-results-filters .icon-list{vertical-align:middle}.search-results-filters .icon-checkbox{margin-bottom:2px;width:16px;height:16px}.search-results-container .icon-file{margin-right:10px;width:21px;height:21px}.email_list .icon-trash{vertical-align:middle}.dashboard-detail-details .icon-book,.dashboard-detail-details .icon-pencil,.dashboard-detail-details .icon-play,.dashboard-detail-details .icon-undo{float:left;margin-right:5px}.column-hacks .icon-arrow{vertical-align:text-bottom}@media all and (max-width:47.9375em){.column-hacks .icon-star,.column-involved .icon-smile{width:16px;height:16px}}.clear{clear:both}.clear:after{content:' ';clear:both;display:table}.align-center{text-align:center}.center{margin:0 auto;position:relative;max-width:87.4375em;padding-left:15px;padding-right:15px}main>.center{padding-top:30px;padding-bottom:30px}@media all and (min-width:47.9385em){.center{padding-left:24px;padding-right:24px}}.wiki-main-content .center{padding-left:0;padding-right:0}.hidden,.is-hidden{display:none}.translate-rendered .hidden,.translate-rendered .is-hidden,body[contenteditable] .hidden,body[contenteditable] .is-hidden,html.cke_panel_container .hidden,html.cke_panel_container .is-hidden{position:relative;display:block;border:2px dotted #000;padding:3px}.translate-rendered .hidden:before,.translate-rendered .is-hidden:before,body[contenteditable] .hidden:before,body[contenteditable] .is-hidden:before,html.cke_panel_container .hidden:before,html.cke_panel_container .is-hidden:before{font-size:14px;font-size:.77778rem;font-family:Helvetica,arial,sans-serif;content:'hidden';position:absolute;top:-17px;left:-2px;z-index:10;display:block;padding:0 2px;background:#000;color:#fff}.title{font-weight:700;color:#333;text-decoration:none;display:block}.smaller{font-size:16px;font-size:.88889rem}.larger{font-size:19px;font-size:1.05556rem}.grid-padding{padding:20px}.fixed{position:fixed;top:0;z-index:10;overflow-y:auto}.media,.media-body,.notification,.notification-message{overflow:hidden;zoom:1}.media-side,.notification-img{float:left;margin-right:10px}html[dir=rtl] .media-side,html[dir=rtl] .notification-img{float:right;margin-right:0;margin-left:10px}.media-side img,.notification-img img{display:block}.media-reverse .media-side,.media-reverse .notification-img{float:right;margin-left:10px}html[dir=rtl] .media-reverse .media-side,html[dir=rtl] .media-reverse .notification-img{float:left;margin-left:0;margin-right:10px}@media all and (max-width:47.9375em){.media-mobile-stack .media-body,.media-mobile-stack .media-side,.media-mobile-stack .notification-img,.media-mobile-stack .notification-message{float:none;margin-left:0;margin-right:0}.media-mobile-stack.media-reverse{display:table;caption-side:top;width:100%}.media-mobile-stack.media-reverse .media-side,.media-mobile-stack.media-reverse .notification-img{display:table-cell}.media-mobile-stack.media-reverse .media-body,.media-mobile-stack.media-reverse .notification-message{display:table-caption}}@media all and (max-width:29.9375em){.media-small-mobile-stack .media-body,.media-small-mobile-stack .media-side,.media-small-mobile-stack .notification-img,.media-small-mobile-stack .notification-message{float:none;margin-left:0;margin-right:0}.media-small-mobile-stack.media-reverse{display:table;caption-side:top;width:100%}.media-small-mobile-stack.media-reverse .media-side,.media-small-mobile-stack.media-reverse .notification-img{display:table-cell}.media-small-mobile-stack.media-reverse .media-body,.media-small-mobile-stack.media-reverse .notification-message{display:table-caption}}.only-icon i[class^=icon-]{margin-top:-1px!important}.bump-left-padding{padding-left:40px}.light-grey-background{background-color:#eee}.full-width{display:block;width:100%}.toggler{position:relative}.toggler i[class^=icon-]{position:absolute;top:3px;color:#333}.toggler i[class^=icon-]{right:10px}html[dir=rtl] .toggler i[class^=icon-]{right:auto;left:10px}.toggler .icon-caret-right{-webkit-transform:rotate(0);-ms-transform:rotate(0);transform:rotate(0)}html[dir=rtl] .toggler .icon-caret-right{-webkit-transform:rotate(180deg);-ms-transform:rotate(180deg);transform:rotate(180deg)}.toggle-container.closed{display:none}.subnav .toggler,.subnav>ol>li>a{padding:20px 40px 20px 20px;border-bottom:1px dotted #d4dde4;text-transform:uppercase;display:block}.subnav ol ol{display:none}.no-js .subnav ol ol{display:block}.subnav .toggleable.current,.subnav>ol>li.current{background:#eee}.subnav i[class^=icon-]{top:23px}.subnav i[class^=icon-]{right:20px}html[dir=rtl] .subnav i[class^=icon-]{right:auto;left:20px}.subnav .toggle-container a{font-size:16px;font-size:.88889rem;display:block;padding:6px 20px}.subnav .toggle-container .toggleable{background:#e9eef1}.subnav .toggle-container .toggleable .toggler{font-weight:700;color:#333;text-decoration:none;display:block;font-weight:400;padding-top:10px;padding-bottom:10px;border:0}.subnav .toggle-container .toggleable .toggler i{top:10px}.subnav .toggle-container .toggleable .toggle-container a{padding-left:30px}.subnav .toggle-container li.current>a:not(.toggler){position:relative;color:#fff;background-color:#333}.subnav .toggle-container li.current>a:not(.toggler):after,.subnav .toggle-container li.current>a:not(.toggler):before{content:' ';height:0;position:absolute;width:0;border:10px solid transparent}.subnav .toggle-container li.current>a:not(.toggler):before{border-right-color:#fff;position:absolute;top:20%;right:0}.subnav a{text-decoration:none}.subnav a:active,.subnav a:focus,.subnav a:hover{text-decoration:underline}.notification{border-radius:2px;border-style:solid;border-width:2px;margin-bottom:20px;padding:10px;position:relative}body>.notification{margin-bottom:0}.text-content .notification{box-sizing:border-box;max-width:42rem}.notification.closed{display:none}.notification.clickable{cursor:pointer}.notification button.close{background:0 0;border:0;display:block;padding:2px;position:absolute;top:0;right:0}.notification{background-color:#eee;border-color:#696969;color:#333}.notification .notification-button{background-color:#696969;color:#333}.notification .notification-button:focus,.notification .notification-button:hover{background:0 0;text-decoration:none}.notification button.close{color:#696969}.notification button.close:focus,.notification button.close:hover{color:#4c4c4c}.notification.info{background-color:#e4f0f5;border-color:#3d7e9a;color:#333}.notification.info .notification-button{background-color:#3d7e9a;color:#333}.notification.info .notification-button:focus,.notification.info .notification-button:hover{background:0 0;text-decoration:none}.notification.info button.close{color:#3d7e9a}.notification.info button.close:focus,.notification.info button.close:hover{color:#285c76}.notification.success{background-color:#ebf8e1;border-color:#4d9f0c;color:#333}.notification.success .notification-button{background-color:#4d9f0c;color:#333}.notification.success .notification-button:focus,.notification.success .notification-button:hover{background:0 0;text-decoration:none}.notification.success button.close{color:#4d9f0c}.notification.success button.close:focus,.notification.success button.close:hover{color:#3a7408}.notification.warning{background-color:#fff3d4;border-color:#f6b73c;color:#333;border-width:2px;font-style:normal}.notification.warning .notification-button{background-color:#f6b73c;color:#333}.notification.warning .notification-button:focus,.notification.warning .notification-button:hover{background:0 0;text-decoration:none}.notification.warning button.close{color:#f6b73c}.notification.warning button.close:focus,.notification.warning button.close:hover{color:#b28529}.notification.warning a,.notification.warning a:focus,.notification.warning a:hover,.notification.warning a:visited{border-bottom:0;color:#3d7e9a;text-decoration:none}.notification.warning a:focus,.notification.warning a:hover{text-decoration:underline}.notification.error{background-color:#ffe7e8;border-color:#e66465;color:#333}.notification.error .notification-button{background-color:#e66465;color:#333}.notification.error .notification-button:focus,.notification.error .notification-button:hover{background:0 0;text-decoration:none}.notification.error button.close{color:#e66465}.notification.error button.close:focus,.notification.error button.close:hover{color:#b65456}.notification-message :first-child{margin-top:0}.notification-button{border:1px solid;border-radius:2px;display:inline-block;line-height:1;margin:5px 5px 0 0;padding:2px 5px 3px;text-transform:none}.notification.warning .notification-button{border:1px solid;margin:5px 5px 0 0;padding:2px 5px 3px}.notification-tray{position:fixed;top:10px;right:10px;z-index:999999;width:300px;font-size:16px}.notification-tray .notification{margin-bottom:8px}ul.option-list{clear:both;float:left;list-style-type:none;max-width:100%;overflow:hidden}ul.option-list:after{content:' ';clear:both;display:table}ul.option-list{padding-left:20px}html[dir=rtl] ul.option-list{padding-left:0;padding-right:20px}ul.option-list li{clear:both}ul.option-list li:after{content:' ';clear:both;display:table}.option-list-options{float:right;margin-left:20px;text-align:right}html[dir=rtl] .option-list-options{float:left;margin-left:20px;margin-right:20px;text-align:left}@media all and (max-width:47.9375em){.option-list-options{width:100%}}.text-content dl,.text-content ol,.text-content ul{box-sizing:border-box;max-width:42rem}.text-content ul{list-style:disc}.text-content ul ul{list-style:circle}.text-content ol ol,.text-content ol ul,.text-content ul ol,.text-content ul ul{margin-bottom:0;padding-top:6px}.text-content ol,.text-content ul{margin-bottom:24px}.text-content ol,.text-content ul{padding-left:40px}html[dir=rtl] .text-content ol,html[dir=rtl] .text-content ul{padding-left:0;padding-right:40px}.text-content ol.no-bullets,.text-content ul.no-bullets{list-style-type:none}.text-content ol.no-bullets,.text-content ul.no-bullets{padding-left:0}html[dir=rtl] .text-content ol.no-bullets,html[dir=rtl] .text-content ul.no-bullets{padding-left:0;padding-right:0}.text-content ol{list-style-type:decimal}.text-content li{margin-bottom:6px}.text-content>li:last-child{padding-bottom:0}.text-content dt{font-style:normal;font-weight:700}.text-content dd{margin-bottom:24px}.text-content dd{padding-left:20px}html[dir=rtl] .text-content dd{padding-left:0;padding-right:20px}.text-content img.lwrap{padding:0 20px 10px 0}.text-content img.rwrap{padding:0 0 10px 20px}.text-content article[id=wikiArticle]>div:not([class])>h2,.text-content article[id=wikiArticle]>h2{position:relative;margin-top:60px;padding-top:40px;border-top:3px solid #3d7e9a}.text-content article[id=wikiArticle]>div:first-child:empty+div:not([class])>h2:first-child,.text-content article[id=wikiArticle]>div:first-child:empty+h2,.text-content article[id=wikiArticle]>h2:first-child,.text-content article[id=wikiArticle]>p:first-child:empty+div:not([class])>h2:first-child,.text-content article[id=wikiArticle]>p:first-child:empty+h2{margin-top:0;padding-top:0}.text-content article[id=wikiArticle]>div:first-child:empty+div:not([class])>h2:first-child:before,.text-content article[id=wikiArticle]>div:first-child:empty+h2:before,.text-content article[id=wikiArticle]>h2:first-child:before,.text-content article[id=wikiArticle]>p:first-child:empty+div:not([class])>h2:first-child:before,.text-content article[id=wikiArticle]>p:first-child:empty+h2:before{display:none}.text-content article[id=wikiArticle]>blockquote+h2,.text-content article[id=wikiArticle]>hr+h2{margin-top:-23px;padding-top:43px;background-color:#fff}.text-content article[id=wikiArticle]>blockquote+h2:before,.text-content article[id=wikiArticle]>hr+h2:before{top:0}.text-content.boxed>h2{position:relative;margin-top:60px;padding-top:40px;border-top:3px solid #3d7e9a}.text-content article[id=wikiArticle]>div:not([class])>h3 .highlight-span,.text-content article[id=wikiArticle]>h3 .highlight-span,.text-content article[id=wikiArticle]>h3:not(.highlight-spanned){padding:0 4px 0 20px}html[dir=rtl] .text-content article[id=wikiArticle]>div:not([class])>h3 .highlight-span,html[dir=rtl] .text-content article[id=wikiArticle]>h3 .highlight-span,html[dir=rtl] .text-content article[id=wikiArticle]>h3:not(.highlight-spanned){padding:0 20px 0 4px}@media all and (min-width:47.9385em){.text-content article[id=wikiArticle]>div:not([class])>h3 .highlight-span,.text-content article[id=wikiArticle]>h3 .highlight-span,.text-content article[id=wikiArticle]>h3:not(.highlight-spanned){padding:0 4px 0 40px}html[dir=rtl] .text-content article[id=wikiArticle]>div:not([class])>h3 .highlight-span,html[dir=rtl] .text-content article[id=wikiArticle]>h3 .highlight-span,html[dir=rtl] .text-content article[id=wikiArticle]>h3:not(.highlight-spanned){padding:0 40px 0 4px}}.text-content table{box-sizing:border-box;width:100%;max-width:100%;border-collapse:collapse;border:solid #e0e0dc;border-width:1px 0 0 1px}.text-content table dl,.text-content table p,.text-content table ul{max-width:100%}.text-content table.standard-table:not(.learn-box){border:2px solid #fff}.text-content table.standard-table:not(.learn-box) td{background-color:#f9fafb;background-color:rgba(212,221,228,.15);border:2px solid #fff;box-shadow:inset 0 -1px 0 0 rgba(212,221,228,.5)}.text-content table.standard-table:not(.learn-box):not(.nostripe) tr:nth-child(odd) td{background-color:#f4f7f8;background-color:rgba(212,221,228,.25)}.text-content table.standard-table:not(.learn-box) td.header,.text-content table.standard-table:not(.learn-box) th{border:2px solid #fff;border-bottom:2px solid #d4dde4;background:#eaeef2;background:rgba(212,221,228,.5);padding:2px 8px 4px;font-family:x-locale-heading-primary,zillaslab,Palatino,"Palatino Linotype",x-locale-heading-secondary,serif;font-weight:700}.text-content table.standard-table:not(.learn-box).fullwidth{width:100%}.text-content table.fullwidth-table{background:#fff;border-width:1px;border-style:solid;border-color:#eaeef2;border-color:rgba(212,221,228,.5);margin-bottom:20px;width:100%}.text-content table.fullwidth-table td{border:1px solid #ccc;padding:5px;vertical-align:top}.text-content table.fullwidth-table td{text-align:left}html[dir=rtl] .text-content table.fullwidth-table td{text-align:right}.text-content table.fullwidth-table td.header,.text-content table.fullwidth-table th{background:#eaeef2;background:rgba(212,221,228,.5);border:1px solid #d4dde4;padding:5px}.text-content td,.text-content th{border:solid #e0e0dc;border-width:0 1px 1px 0;padding:6px 8px}.text-content td,.text-content th{text-align:left}html[dir=rtl] .text-content td,html[dir=rtl] .text-content th{text-align:right}.text-content thead th{background:#eaeef2;background:rgba(212,221,228,.5)}.text-content div:not(.line-highlight):empty{display:none}.text-content p{box-sizing:border-box;max-width:42rem}.text-content pre{box-sizing:border-box;width:100%;max-width:100%}.text-content pre dl,.text-content pre p,.text-content pre ul{max-width:100%}.ui-helper-hidden-accessible{display:none}.ui-autocomplete{background:#fff;border:1px solid #e3e3e3;border-top:0;cursor:default;padding-top:2px;position:absolute;box-shadow:1px 1px 1px rgba(0,0,0,.08)}.ui-menu{float:left;list-style:none;margin:0;padding:0}.ui-menu .ui-menu-item{clear:left;float:left;margin:0;padding:0;width:100%;zoom:1}.ui-menu .ui-menu-item a{display:block;line-height:1.5;text-decoration:none;zoom:1}.ui-menu .ui-state-active,.ui-menu .ui-state-focus,.ui-menu .ui-state-highlight,.ui-menu .ui-state-hover{background:#eee}@media all and (max-width:47.9375em){.column-1,.column-10,.column-11,.column-12,.column-2,.column-3,.column-4,.column-5,.column-6,.column-7,.column-8,.column-9,.column-all,.column-container>[class^=column-],.column-half,.column-quarter,.column-strip,.column-third{clear:both}.column-10:after,.column-11:after,.column-12:after,.column-1:after,.column-2:after,.column-3:after,.column-4:after,.column-5:after,.column-6:after,.column-7:after,.column-8:after,.column-9:after,.column-all:after,.column-container>[class^=column-]:after,.column-half:after,.column-quarter:after,.column-strip:after,.column-third:after{content:' ';clear:both;display:table}}@media all and (min-width:47.9385em){.column-container{clear:both}.column-container:after{content:' ';clear:both;display:table}.column-container>[class^=column-]{margin-right:3%;min-height:1px}.column-container>[class^=column-]{float:left}html[dir=rtl] .column-container>[class^=column-]{float:right}.column-container>[class^=column-]:first-child{margin-right:3%}html[dir=rtl] .column-container>[class^=column-]:first-child{margin-right:0}.column-container>[class^=column-]:last-child{margin-right:0}html[dir=rtl] .column-container>[class^=column-]:last-child{margin-right:3%}.column-container.column-container-reverse>[class^=column-]{float:right}html[dir=rtl] .column-container.column-container-reverse>[class^=column-]{float:left}.column-container.column-container-reverse>[class^=column-]:first-child{margin-right:0}html[dir=rtl] .column-container.column-container-reverse>[class^=column-]:first-child{margin-right:3%}.column-container.column-container-reverse>[class^=column-]:last-child{margin-right:3%}html[dir=rtl] .column-container.column-container-reverse>[class^=column-]:last-child{margin-right:0}.column-closed{display:none}.column-1{width:5.58333%}.column-2{width:14.16667%}.column-3,.column-quarter,.column-strip{width:22.75%}.column-4,.column-third{width:31.33333%}.column-5{width:39.91667%}.column-6,.column-half{width:48.5%}.column-7{width:57.08333%}.column-8{width:65.66667%}.column-9,.column-main{width:74.25%}.column-10{width:82.83333%}.column-11{width:91.41667%}.column-12,.column-all{width:auto;margin:0;float:none}}.cols-2{-moz-column-count:2;-webkit-column-count:2;column-count:2;-moz-column-gap:10px;-webkit-column-gap:10px;column-gap:10px}.cols-3{-moz-column-count:3;-webkit-column-count:3;column-count:3;-moz-column-gap:10px;-webkit-column-gap:10px;column-gap:10px}.cols-4{-moz-column-count:4;-webkit-column-count:4;column-count:4;-moz-column-gap:10px;-webkit-column-gap:10px;column-gap:10px}.global-notice{position:relative;margin:0 0 -1px;background:#eee}.global-notice .wrap{font-size:16px;font-size:.88889rem;padding:10px 24px}.global-notice .wrap>p:last-child{margin-bottom:0}#nav-access{width:100%;position:absolute;top:-20em;z-index:1001}#nav-access a{background:#fff;background:rgba(255,255,255,.9);padding:12px 10px;position:absolute;left:0;right:0;font-weight:700;text-align:center}#nav-access a:focus,#nav-access a:hover{box-shadow:3px 3px 5px #aaa;top:20em;text-decoration:none}#main-header{clear:both;position:relative;z-index:96;border:5px solid #83d0f2;border-width:5px 0 0;background-color:#fff}#main-header:after{content:' ';clear:both;display:table}.header-main{display:flex;flex-direction:column;padding:15px 15px 0}@media all and (min-width:47.9385em){.header-main{display:block}}@media all and (min-width:63.9385em){.header-main{display:flex;flex-direction:row;padding-top:0}.header-main{padding-left:15px;padding-right:0}html[dir=rtl] .header-main{padding-left:0;padding-right:15px}}.logo{position:relative;z-index:97;width:170px;height:30px;background:url("/web/20190907003049im_/https://developer.mozilla.org/static/img/web-docs-sprite.22a6a085cf14.svg") 100% 0 no-repeat;background-size:219px auto;display:block;direction:ltr;text-indent:-9999px;overflow:hidden;flex-shrink:1}@media all and (min-width:47.9385em){.logo{display:block;position:relative;height:48px}}@media all and (min-width:63.9385em){.logo{background-size:100% auto;margin-top:15px;width:219px}}.submenu{box-sizing:border-box;display:none;position:absolute;z-index:99;top:100%;width:250px;padding:15px;border-top:5px solid #eee;box-shadow:0 4px 4px rgba(0,0,0,.15);background-color:#fff}.submenu{right:0;text-align:left}html[dir=rtl] .submenu{right:auto;left:0;text-align:right}.submenu.submenu-cols-2{width:500px}.submenu .submenu-column{box-sizing:border-box;display:inline-block;vertical-align:text-top;width:250px}.submenu .submenu-column{padding-right:20px}html[dir=rtl] .submenu .submenu-column{padding-right:0;padding-left:20px}@supports (width:-webkit-max-content) or (width:-moz-max-content) or (width:max-content){.submenu,.submenu.submenu-cols-2{width:-webkit-max-content;width:-moz-max-content;width:-ms-max-content;width:max-content}.submenu .submenu-column{width:-webkit-max-content;width:-moz-max-content;width:-ms-max-content;width:max-content}.submenu .submenu-column+.submenu-column{padding-left:40px}html[dir=rtl] .submenu .submenu-column+.submenu-column{padding-left:20px;padding-right:40px}}.submenu .title{font-family:x-locale-heading-primary,zillaslab,Palatino,"Palatino Linotype",x-locale-heading-secondary,serif;font-size:24px;font-size:1.33333rem}.submenu i[class^=icon-]{margin-left:5px}html[dir=rtl] .submenu i[class^=icon-]{margin-left:0;margin-right:5px}.submenu a{display:block;padding:5px 0;margin-bottom:5px}.page-buttons .submenu{border-top:5px solid #9b9b9b}.page-buttons .submenu{left:auto;right:0}html[dir=rtl] .page-buttons .submenu{left:auto;right:auto;right:auto;left:0}.submenu-close{position:absolute;top:0;z-index:1}.submenu-close{right:0}html[dir=rtl] .submenu-close{right:auto;left:0}@media all and (max-width:47.9375em){.nav-main .submenu{position:relative;width:100%;padding:0;border-top:0;box-shadow:none}.nav-main .submenu a{display:block}.nav-main .submenu .submenu-column,.nav-main .submenu.submenu-cols-2{width:100%}.nav-main .submenu .submenu-column+.submenu-column,.nav-main .submenu.submenu-cols-2+.submenu-column{padding-left:0}html[dir=rtl] .nav-main .submenu .submenu-column+.submenu-column,html[dir=rtl] .nav-main .submenu.submenu-cols-2+.submenu-column{padding-left:0;padding-right:0}}@media all and (min-width:74.9375em){.submenu-close{display:none}}.nav-toolbox-wrapper{display:block}@media all and (min-width:47.9385em){.nav-toolbox-wrapper{display:flex;flex-direction:row;margin-top:24px;border-top:5px solid #eee}.nav-toolbox-wrapper .toolbox{text-align:right}html[dir=rtl] .nav-toolbox-wrapper .toolbox{text-align:left}}@media all and (min-width:63.9385em){.nav-toolbox-wrapper{margin-top:0;border-top:0;flex-grow:2;flex-shrink:2}}.nav-toolbox-wrapper.hidden{display:none}.toolbox{display:block;position:relative;z-index:97}@media all and (min-width:47.9385em){.toolbox{flex-grow:2;flex-shrink:2}}@media all and (min-width:63.9385em){.toolbox{text-align:right}.toolbox>ul>li>a{padding:0 10px}.toolbox>ul>li>a{color:#333}.toolbox>ul>li>a:focus,.toolbox>ul>li>a:hover{color:#333}}.toolbox.hidden{display:none}.nav-tools{display:none}@media all and (min-width:63.9385em){.nav-tools{display:inline-block;position:relative;border:0}.nav-tools>a{display:inline-block;line-height:88px;padding:0 10px}html:not(.no-js) .nav-tools>a{text-decoration:none}html:not(.no-js) .nav-tools>a i[class^=icon-]{display:inline-block;float:none;margin-left:5px}html[dir=rtl]:not(.no-js) .nav-tools>a i[class^=icon-]{margin-right:5px}.nav-tools>a:focus,.nav-tools>a:hover{background-color:#eee;color:#333}}@media all and (min-width:47.9385em){.nav-login{display:inline-block}}@media all and (max-width:47.9375em){.login{border-bottom:1px solid #333}.login>a{display:block;padding:6px 0}.login>a i[class^=icon-]{float:right}html[dir=rtl] .login>a i[class^=icon-]{float:left}.login .submenu{position:relative;width:100%;padding:0;border-top:0;box-shadow:none}.login .submenu a{display:block}.login-form{display:block;margin:6px 0}.button.logout{display:block}.login-photo{display:none}}@media all and (min-width:47.9385em){.login-name{display:none}.login{display:inline-block;position:relative;border:0}.login>a{display:inline-block;line-height:88px;padding:0 10px}html:not(.no-js) .login>a{text-decoration:none}html:not(.no-js) .login>a i[class^=icon-]{display:inline-block;float:none;margin-left:5px}html[dir=rtl]:not(.no-js) .login>a i[class^=icon-]{margin-right:5px}.login>a:focus,.login>a:hover{background-color:#eee;color:#333}.login>a{color:#333}.login>a:focus,.login>a:hover{text-decoration:underline}.login-photo{border-radius:50%;max-width:50px;max-height:50px;vertical-align:middle;overflow:hidden}}@media all and (min-width:47.9385em){.login>a{padding:0 10px}}.nav-main{display:block;position:relative;z-index:95}@media all and (min-width:47.9385em){.nav-main{min-height:88px}}@media all and (min-width:63.9385em){.nav-main{min-height:0;padding-top:0}.nav-main:after{display:none}}html:not(.no-js) .nav-main-item>a{color:#333;text-decoration:none}.expanded .nav-main{flex-grow:2;flex-shrink:2}.nav-main-item{border-bottom:1px solid #333}.nav-main-item>a{display:block;padding:6px 0}.nav-main-item>a i[class^=icon-]{float:right}html[dir=rtl] .nav-main-item>a i[class^=icon-]{float:left}@media all and (min-width:47.9385em){.nav-main-item{display:inline-block;position:relative;border:0}.nav-main-item>a{display:inline-block;line-height:88px;padding:0 10px}html:not(.no-js) .nav-main-item>a{text-decoration:none}html:not(.no-js) .nav-main-item>a i[class^=icon-]{display:inline-block;float:none;margin-left:5px}html[dir=rtl]:not(.no-js) .nav-main-item>a i[class^=icon-]{margin-right:5px}.nav-main-item>a:focus,.nav-main-item>a:hover{background-color:#eee;color:#333}}@media all and (min-width:63.9385em){.nav-main-item>a{padding:0 10px}}.nav-main-search{display:block;position:relative;background-color:transparent}@media all and (min-width:47.9385em){.nav-main-search{position:absolute;top:15px;min-width:100px}.nav-main-search{right:15px}html[dir=rtl] .nav-main-search{right:auto;left:15px}}@media all and (min-width:63.9385em){.nav-main-search{display:inline-block;background-color:#222;position:relative;top:0;vertical-align:top}.nav-main-search{right:auto}html[dir=rtl] .nav-main-search{right:auto;left:auto}}.nav-main-search input[type=search]{color:#333;margin:6px auto;width:100%}.nav-main-search input[type=search]{padding-left:2.5em}html[dir=rtl] .nav-main-search input[type=search]{padding-left:0;padding-right:2.5em}@media all and (min-width:63.9385em){.nav-main-search input[type=search]{background-color:#222;color:#fff;border:0;border-bottom:1px solid #fff;border-radius:unset;-webkit-appearance:none;outline:0}.nav-main-search input[type=search]{margin-right:50px;margin-left:75px}html[dir=rtl] .nav-main-search input[type=search]{margin-right:75px;margin-left:50px}.nav-main-search input[type=search]{padding-left:0}html[dir=rtl] .nav-main-search input[type=search]{padding-left:0;padding-right:0}}@media all and (min-width:74.9375em){.nav-main-search input[type=search]{width:335px}}@media all and (min-width:63.9385em) and (max-width:74.9375em){.nav-main-search input[type=search]{width:255px}.nav-main-search input[type=search]{margin-right:15px;margin-left:15px}html[dir=rtl] .nav-main-search input[type=search]{margin-right:15px;margin-left:15px}}.search-trigger{position:absolute;top:12px;z-index:2}.search-trigger{left:15px}html[dir=rtl] .search-trigger{left:auto;right:15px}@media all and (min-width:63.9385em){.search-trigger{position:absolute;top:5px;color:#fff}.search-trigger{left:30%;right:auto}html[dir=rtl] .search-trigger{left:30%;right:auto}}.search-trigger i[class^=icon-]{cursor:pointer}@media all and (min-width:63.9385em){.search-trigger i[class^=icon-]{font-size:32px;font-size:1.77778rem}}.close-header-search{display:none}@media all and (min-width:63.9385em){.nav-main-search{cursor:pointer}.search-wrap{width:0;overflow:hidden;line-height:88px;-moz-transition-property:width,opacity;-webkit-transition-property:width,opacity;transition-property:width,opacity;-moz-transition-duration:.5s;-webkit-transition-duration:.5s;transition-duration:.5s}.expanded .nav-main-search{cursor:default}.expanded .search-trigger{left:15px}html[dir=rtl] .expanded .search-trigger{left:auto;right:15px}}@media all and (min-width:63.9385em) and (min-width:63.9385em) and (max-width:74.9375em){.expanded .search-trigger{display:none}}@media all and (min-width:63.9385em){.expanded .close-header-search{position:absolute;top:20px;display:inline-block;color:#fff}.expanded .close-header-search{right:45px}html[dir=rtl] .expanded .close-header-search{right:auto;left:45px}}@media all and (min-width:63.9385em) and (min-width:63.9385em) and (max-width:74.9375em){.expanded .close-header-search{right:25px}html[dir=rtl] .expanded .close-header-search{right:auto;left:25px}}@media all and (min-width:63.9385em) and (max-width:74.9375em){.expanded .search-wrap{width:300px}}@media all and (min-width:74.9375em){.expanded .search-wrap{width:450px}}html[lang=de] .nav-main-search{min-width:80px}@media all and (min-width:63.9385em) and (max-width:74.9375em){html[lang=de] .expanded .search-wrap{width:280px}}.search-form{display:block;margin:20px auto 40px auto;padding:0;position:relative;width:100%;max-width:775px}.search-form.home-search-form{margin:40px auto}.search-form>input#home-q,.search-form>input#search-q{display:block;width:100%;margin:0 auto;padding:10px;background:#fff;font-size:19px;font-size:1.05556rem}.search-form>input#home-q,.search-form>input#search-q{padding-left:48px}html[dir=rtl] .search-form>input#home-q,html[dir=rtl] .search-form>input#search-q{padding-left:0;padding-right:48px}.search-form>input#home-q::-webkit-input-placeholder,.search-form>input#search-q::-webkit-input-placeholder{color:#333}.search-form>input#home-q:-ms-input-placeholder,.search-form>input#search-q:-ms-input-placeholder{color:#333}.search-form>input#home-q::-moz-placeholder,.search-form>input#search-q::-moz-placeholder{color:#333}.search-form>input#home-q::placeholder,.search-form>input#search-q::placeholder{color:#333}.search-form .search-icon{position:absolute;top:0;bottom:0;width:48px;display:flex;align-items:center;justify-content:center}.search-form .search-icon{left:0}html[dir=rtl] .search-form .search-icon{left:auto;right:0}.search-form .search-icon:after{content:'';position:absolute;top:10px;bottom:10px;display:block;border-left:1px solid #9b9b9b}.search-form .search-icon:after{left:40px}html[dir=rtl] .search-form .search-icon:after{left:auto;right:40px}@media all and (min-width:63.9385em){.search-form.home-search-form{margin:0 auto 30px auto}.search-form>input#home-q,.search-form>input#search-q{padding:20px}.search-form>input#home-q,.search-form>input#search-q{padding-left:70px}html[dir=rtl] .search-form>input#home-q,html[dir=rtl] .search-form>input#search-q{padding-left:0;padding-right:70px}.search-form .search-icon{width:60px}.search-form .search-icon:after{top:20px;bottom:20px}.search-form .search-icon:after{left:54px}html[dir=rtl] .search-form .search-icon:after{left:auto;right:54px}}.document-head{position:relative;z-index:88;clear:both;background-color:#f5f9fa;padding:30px 0 30px 0}.document-title h1,div[class*=titlebar] h1{font-size:32px;font-size:1.77778rem;hyphens:auto}@media all and (min-width:29.9385em){.document-title h1,div[class*=titlebar] h1{font-size:51px;font-size:2.83333rem}}.document-title em,div[class*=titlebar] em{font-style:normal;text-transform:none}.document-title em,div[class*=titlebar] em{margin-left:-3px}html[dir=rtl] .document-title em,html[dir=rtl] div[class*=titlebar] em{margin-left:0;margin-right:-3px}.document-actions{padding-bottom:0}.document-actions{text-align:right}html[dir=rtl] .document-actions{text-align:left}.document-actions .page-buttons{float:none}html[dir=rtl] .document-actions .page-buttons{float:none}@media all and (min-width:29.9385em){@supports (display:flex){.document-head .center{display:flex;justify-content:space-between;flex-wrap:wrap}.document-head .center .document-title{flex-grow:1}.document-head .center .document-actions{flex-grow:9999}.document-head .center .document-actions{text-align:right}html[dir=rtl] .document-head .center .document-actions{text-align:left}}}.title-prefix{font-size:24px;font-size:1.33333rem;display:block;color:#696969}.title-properties button.link{font-size:16px;font-size:.88889rem;font-weight:700}.title-locale{font-size:16px;font-size:.88889rem}.nav-footer{clear:both;padding-top:15px;padding-bottom:15px;background-color:#222;color:#fff}.nav-footer:after{content:' ';clear:both;display:table}.nav-footer a{color:#83d0f2}.nav-footer-logo,.nav-footer-mozilla{width:219px;height:48px;background:url("/web/20190907003049im_/https://developer.mozilla.org/static/img/web-docs-sprite.22a6a085cf14.svg") 100% -58px no-repeat;background-size:219px auto;display:block;direction:ltr;text-indent:-9999px;overflow:hidden;margin-bottom:15px}.nav-footer-mozilla{width:114px;height:32px;background:url("/web/20190907003049im_/https://developer.mozilla.org/static/img/web-docs-sprite.22a6a085cf14.svg") -96px -171px no-repeat;background-size:420px auto}.footer-title{display:none}.footer-group{clear:both;border-bottom:1px solid #fff;padding-bottom:15px;margin-bottom:15px}.footer-group:after{content:' ';clear:both;display:table}.footer-group a{display:inline-block;padding:10px 0}.footer-social{font-size:24px;font-size:1.33333rem;display:inline-block}.footer-social{margin-right:10px}html[dir=rtl] .footer-social{margin-right:0;margin-left:10px}.footer-social a{padding-right:20px}html[dir=rtl] .footer-social a{padding-right:0;padding-left:20px}.languages{clear:both;border-bottom:1px solid #fff;padding-bottom:15px;margin-bottom:15px}.languages:after{content:' ';clear:both;display:table}.languages label{font-size:14px;font-size:.77778rem}.footer-tos{font-size:19px;font-size:1.05556rem;margin-bottom:15px}.footer-tos li{display:inline-block}.footer-tos li{margin-right:20px}html[dir=rtl] .footer-tos li{margin-right:0;margin-left:20px}@media all and (min-width:47.9385em){.nav-footer{padding-top:24px;padding-bottom:24px}.nav-footer-logo,.nav-footer-mozilla{margin-bottom:24px}.footer-title{display:none}.footer-group{padding-bottom:24px;margin-bottom:24px}.footer-group a{padding:5px 0}.footer-social a{padding-right:10px}html[dir=rtl] .footer-social a{padding-right:0;padding-left:10px}.languages{clear:both;padding-bottom:24px;margin-bottom:24px}.languages:after{content:' ';clear:both;display:table}.languages select{max-width:22.75%}.footer-tos{margin-bottom:24px}}@media all and (min-width:63.9385em){.nav-footer{position:relative;padding:60px 20px}.nav-footer-logo,.nav-footer-mozilla{margin-bottom:40px}.footer-title{display:block;font-size:20px;font-size:1.11111rem;font-family:Arial,x-locale-body,sans-serif;letter-spacing:-.00278rem}.footer-group{border-bottom:none;padding-bottom:0;margin-bottom:0}.footer-group-mdn{position:absolute;top:20px;width:22.75%}.footer-group-mdn{left:39.91667%}html[dir=rtl] .footer-group-mdn{left:auto;right:39.91667%}.footer-group-mozilla{position:absolute;top:20px;width:22.75%}.footer-group-mozilla{left:65.66667%}html[dir=rtl] .footer-group-mozilla{left:auto;right:65.66667%}.languages{border-bottom:none;padding-bottom:0;margin-bottom:20px}.languages label{display:block}.footer-tos{margin-bottom:20px}}.contentinfo{font-size:14px;font-size:.77778rem}.contentinfo p{display:inline}@media all and (min-width:63.9385em){.contentinfo{width:31.33333%}}.archive-content{background-color:#ffe7e8;border:10px solid #e66465;border-image:repeating-linear-gradient(-45deg,#e66465 0,#e66465 5px,#f6b73c 5px,#f6b73c 10px,#e66465 10px) 10 10 repeat;padding:15px}@media all and (min-width:47.9385em){.archive-content{border-width:20px;border-image:repeating-linear-gradient(-45deg,#e66465 0,#e66465 10px,#f6b73c 10px,#f6b73c 20px,#e66465 20px) 20 20 repeat;padding:24px}}.socialaccount-providers li{margin:0 20px 0 0;display:inline-block}.socialaccount-providers li span.signin{min-width:140px}a.github-button{border-radius:3px;z-index:2;display:inline-block;font-weight:700}a.github-button:focus span{text-decoration:underline}a.github-button span{text-decoration:none;display:block;float:left;font-size:18px;font-size:1rem;line-height:24px;color:#fff;padding:0 10px 0 20px;position:relative}a.github-button span:after{content:'';position:absolute;top:0;right:-12px;width:24px;height:24px;z-index:1;-webkit-transform:scale(.707) rotate(45deg);-ms-transform:scale(.707) rotate(45deg);transform:scale(.707) rotate(45deg);border-radius:0 3px 0 50px}a.github-button span.github-icon{padding-left:3px;border-radius:3px 0 0 3px;background:-webkit-linear-gradient(#43a6e2,#287cc2);background:-moz-linear-gradient(#43a6e2,#287cc2);background:-ms-linear-gradient(#43a6e2,#287cc2);background:linear-gradient(#43a6e2,#287cc2);height:24px}a.github-button span.github-icon:after{background:-webkit-linear-gradient(left top,#43a6e2,#287cc2);background:-moz-linear-gradient(left top,#43a6e2,#287cc2);background:-ms-linear-gradient(left top,#43a6e2,#287cc2);background:linear-gradient(left top,#43a6e2,#287cc2)}a.github-button span.github-icon i{position:relative;top:2px;left:5px;width:15px;height:15px;display:inline-block}a.github-button span.signin{text-shadow:0 1.5px 1px rgba(0,0,0,.35);line-height:23px;padding-bottom:1px}a.github-button span.signin:after{z-index:2;background:-webkit-linear-gradient(top left,#56565a,#3a3a3a);background:-moz-linear-gradient(top left,#56565a,#3a3a3a);background:-ms-linear-gradient(top left,#56565a,#3a3a3a);background:linear-gradient(top left,#56565a,#3a3a3a)}a.github-button span.signin{background:-webkit-linear-gradient(#56565a,#3a3a3a);background:-moz-linear-gradient(#56565a,#3a3a3a);background:-ms-linear-gradient(#56565a,#3a3a3a);background:linear-gradient(#56565a,#3a3a3a)}a.github-button span.github-icon{background:-webkit-linear-gradient(#5d649a,#63397b);background:-moz-linear-gradient(#5d649a,#63397b);background:-ms-linear-gradient(#5d649a,#63397b);background:linear-gradient(#5d649a,#63397b)}a.github-button span.github-icon:after{background:-webkit-linear-gradient(left top,#5d649a,#63397b);background:-moz-linear-gradient(left top,#5d649a,#63397b);background:-ms-linear-gradient(left top,#5d649a,#63397b);background:linear-gradient(left top,#5d649a,#63397b)}a.github-button span.github-icon i[class^=icon-]{top:0;left:8px}#feature-test-element{position:absolute;left:0;top:-999999px;width:0;height:0;overflow:hidden;z-index:1}@media all and (max-width:74.9375em){#feature-test-element{z-index:2}}@media all and (max-width:63.9375em){#feature-test-element{z-index:3}}@media all and (max-width:47.9375em){#feature-test-element{z-index:4}}ol.pagination{margin:20px 0;padding:0 0 30px 0}ol.pagination li{padding:0 2px}ol.pagination li{float:left}html[dir=rtl] ol.pagination li{float:right}ol.pagination li.prev,ol.pagination li.prev a{padding-left:0}html[dir=rtl] ol.pagination li.prev,html[dir=rtl] ol.pagination li.prev a{padding-left:inherit;padding-right:0}ol.pagination li a{padding:3px 8px 5px}ol.pagination li a{float:left}html[dir=rtl] ol.pagination li a{float:right}ol.pagination li a:hover{text-decoration:underline}ol.pagination li.selected a{background:#3d7e9a;color:#fff;border-radius:5px}#wikiArticle>p:first-child:empty{display:none}#wikiArticle{padding-bottom:20px;border-bottom:3px solid #3d7e9a}p.field-explanation{margin-bottom:0}#content-main.full{clear:both;float:none;width:100%}.main{float:left;width:670px}@media all and (max-width:47.9375em){.header-clear{display:none}}.form-group{margin-bottom:20px}ul.errorlist{color:#900;font-weight:700}ul.errorlist li{margin:5px 0}.notification.error .errorlist{color:#333}.compact dt{display:inline;font-weight:700}.compact dd{display:inline;margin-bottom:0}.compact dd{padding-left:8px}html[dir=rtl] .compact dd{padding-left:0;padding-right:8px}.compact dd:after{content:'\A';white-space:pre}.newsletter-teaser{margin-top:0;margin-bottom:20px;font-size:42px;font-size:2.33333rem}.newsletter-description{margin-bottom:20px;font-family:x-locale-heading-primary,zillaslab,Palatino,"Palatino Linotype",x-locale-heading-secondary,serif}.newsletter-fields{margin-bottom:20px}input.newsletter-input-email{box-sizing:border-box;width:100%;padding:10px}.newsletter-hide{position:absolute;top:10px;z-index:11;border:none;padding:0}.newsletter-hide{right:10px}html[dir=rtl] .newsletter-hide{right:auto;left:10px}.newsletter-errors .errorlist{list-style-type:none}.newsletter-errors .errorlist{padding-left:0}html[dir=rtl] .newsletter-errors .errorlist{padding-left:0;padding-right:0}.newsletter-lang{margin-top:20px;margin-bottom:0;font-style:italic}.newsletter-thanks h2{margin-top:0;margin-bottom:20px}.newsletter-submit{position:relative;width:100%;padding:10px}.newsletter-submit{text-align:left}html[dir=rtl] .newsletter-submit{text-align:right}.newsletter-submit .icon-arrow{position:absolute;top:30%}.newsletter-submit .icon-arrow{right:10px}html[dir=rtl] .newsletter-submit .icon-arrow{right:10px;left:10px}.newsletter-submit .icon-arrow{left:auto}html[dir=rtl] .newsletter-submit .icon-arrow{left:10px;right:auto}.newsletter-submit .icon-arrow{transition:right .2s}html[dir=rtl] .newsletter-submit .icon-arrow{transition:left .2s}.newsletter-submit:focus,.newsletter-submit:hover{text-decoration:none}.newsletter-submit:focus .icon-arrow,.newsletter-submit:hover .icon-arrow{right:5px}html[dir=rtl] .newsletter-submit:focus .icon-arrow,html[dir=rtl] .newsletter-submit:hover .icon-arrow{right:10px;left:5px}.newsletter-submit:focus .icon-arrow,.newsletter-submit:hover .icon-arrow{left:auto}html[dir=rtl] .newsletter-submit:focus .icon-arrow,html[dir=rtl] .newsletter-submit:hover .icon-arrow{left:15px;right:auto}@media all and (min-width:29.9385em){.callout-newsletter .form-input,.newsletter-box .form-input{padding:7px 10px 6px 10px}.callout-newsletter .newsletter-fields,.newsletter-box .newsletter-fields{display:flex;flex-wrap:wrap}.callout-newsletter .newsletter-errors,.callout-newsletter .newsletter-group-privacy,.newsletter-box .newsletter-errors,.newsletter-box .newsletter-group-privacy{width:100%}.callout-newsletter .newsletter-group-email,.newsletter-box .newsletter-group-email{width:60%;margin-bottom:0}.callout-newsletter .newsletter-group-privacy,.newsletter-box .newsletter-group-privacy{order:4}.callout-newsletter .newsletter-group-submit,.newsletter-box .newsletter-group-submit{box-sizing:border-box;width:40%}.callout-newsletter .newsletter-group-submit,.newsletter-box .newsletter-group-submit{padding-left:20px}html[dir=rtl] .callout-newsletter .newsletter-group-submit,html[dir=rtl] .newsletter-box .newsletter-group-submit{padding-left:0;padding-right:20px}.callout-newsletter .newsletter-submit,.newsletter-box .newsletter-submit{width:100%}}@media all and (min-width:63.9385em){@supports (display:grid){.callout-newsletter,.newsletter-box{display:flex;align-items:flex-end}.callout-newsletter .newsletter,.newsletter-box .newsletter{width:100%}.callout-newsletter .newsletter-form,.newsletter-box .newsletter-form{display:grid;grid-column-gap:20px;grid-template-columns:1fr 1fr}.callout-newsletter .newsletter-form.hidden,.newsletter-box .newsletter-form.hidden{display:none}.callout-newsletter .newsletter-fields,.newsletter-box .newsletter-fields{display:block}.callout-newsletter .newsletter-group-email,.newsletter-box .newsletter-group-email{width:auto;margin-bottom:20px}.callout-newsletter .newsletter-input-email,.newsletter-box .newsletter-input-email{max-width:none}.callout-newsletter .newsletter-group-submit,.newsletter-box .newsletter-group-submit{width:auto}.callout-newsletter .newsletter-group-submit,.newsletter-box .newsletter-group-submit{padding-left:0}html[dir=rtl] .callout-newsletter .newsletter-group-submit,html[dir=rtl] .newsletter-box .newsletter-group-submit{padding-left:0;padding-right:0}.callout-newsletter .newsletter-submit,.newsletter-box .newsletter-submit{width:100%}.callout-newsletter .newsletter-description,.newsletter-box .newsletter-description{margin-bottom:0;font-size:18px;font-size:1rem}.newsletter-head{grid-column:1/2}.newsletter-fields{grid-column:2/3;align-self:end}input.newsletter-input-email{margin-top:10px}}}@media all and (min-width:74.9375em){@supports (display:grid){.callout-newsletter .newsletter-form,.newsletter-box .newsletter-form{grid-template-columns:2fr 1fr}.callout-newsletter .newsletter-input-email,.callout-newsletter .newsletter-submit,.newsletter-box .newsletter-input-email,.newsletter-box .newsletter-submit{height:50px}}}.callout-newsletter .newsletter-teaser,.callout-newsletter .newsletter-thanks h2{font-size:26px;font-size:1.44444rem}.callout-newsletter .newsletter-fields,.callout-newsletter .newsletter-thanks p{margin-bottom:0}.callout-newsletter a{color:#000;text-decoration:underline}.callout-newsletter a:focus,.callout-newsletter a:hover{text-decoration:none}.newsletter-box{position:relative;border-top:3px solid #333;padding:20px 0;margin-top:40px;background-color:#fff}.newsletter-box.hidden{display:none}.newsletter-box .newsletter-teaser:before{content:'';display:block;height:.5em;width:1.5em}.newsletter-box .newsletter-teaser:before{float:right}html[dir=rtl] .newsletter-box .newsletter-teaser:before{float:left}.newsletter-box .newsletter-description{font-size:24px;font-size:1.33333rem}.newsletter-box .newsletter-fields{margin-bottom:0}@media all and (min-width:47.9385em){.newsletter-box{padding:40px}}@media all and (min-width:63.9385em){.newsletter-box .newsletter-teaser{font-size:51px;font-size:2.83333rem}.newsletter-box .newsletter-description{font-size:26px;font-size:1.44444rem}}.contribution-page-header{background-image:linear-gradient(to right,#83cff3,#ebf8e1);min-width:320px;overflow:hidden;position:relative}.contribution-page-header .column-container{box-sizing:border-box;margin:0 auto;max-height:100%;max-width:1320px;padding:36px 56px;position:relative;transition:padding .3s ease}.contribution-page-header .column-container>.column-half{box-sizing:border-box}.contribution-page-header .column-container>.column-half .container{margin:0 auto;max-width:540px}@media all and (max-width:47.9375em){.contribution-page-header .column-container{padding:12px}}.contribution-page-header .backdrop-image{display:none}@media all and (min-width:63.9385em){.contribution-page-header .backdrop-image{bottom:-150px;left:auto;position:absolute;right:0;z-index:-1}}.payment-terms-container{margin:0 auto;padding:16px 86px;max-width:1320px}.contributions-page .section{display:flex;position:relative;margin:0 auto;padding:56px 18px;max-width:1160px}.contributions-page .section .sub-section{margin-bottom:2em}@media all and (max-width:47.9375em){.contributions-page .section{display:block}.contributions-page .section .faqs,.contributions-page .section h2{display:block}.contributions-page .section .faqs .faq,.contributions-page .section h2 .faq{margin:30px 0}}.contributions-page .backdrop-image{display:none}@media all and (min-width:63.9385em){.contributions-page .backdrop-image{display:block;position:absolute;top:30px;left:70px;width:410px;height:auto}}.contributions-page .index{flex:30%;z-index:99}.contributions-page .index h2{border-bottom:2px solid #333}.contributions-page .faqs{flex:60%}.contributions-page .faqs a{border-bottom:1px solid #3143e2;color:#3143e2;padding-bottom:1px;text-decoration:none}.contributions-page .faqs .faq{background-color:#fff;border:2px solid #333;border-radius:4px;margin:2em;padding:48px;position:relative}.contributions-page .faqs .faq ul{list-style-type:initial;padding-left:1em}.contributions-page .faqs .faq .faq-number{background:#333;box-sizing:border-box;color:#fff;font-family:x-locale-heading-primary,zillaslab,Palatino,"Palatino Linotype",x-locale-heading-secondary,serif;font-size:36px;font-weight:500;height:45px;left:-22px;line-height:40px;padding:0;position:absolute;text-align:center;top:42px;width:45px}.contributions-page .faqs .faq .small{display:block;font-weight:700}.contributions-page .faqs h3{font-size:1.8em;font-weight:400;margin-top:0}
/*
     FILE ARCHIVED ON 00:30:49 Sep 07, 2019 AND RETRIEVED FROM THE
     INTERNET ARCHIVE ON 23:05:14 Feb 19, 2026.
     JAVASCRIPT APPENDED BY WAYBACK MACHINE, COPYRIGHT INTERNET ARCHIVE.

     ALL OTHER CONTENT MAY ALSO BE PROTECTED BY COPYRIGHT (17 U.S.C.
     SECTION 108(a)(3)).
*/
/*
playback timings (ms):
  captures_list: 1.725
  exclusion.robots: 0.049
  exclusion.robots.policy: 0.039
  esindex: 0.009
  cdx.remote: 10.816
  LoadShardBlock: 205.143 (3)
  PetaboxLoader3.datanode: 300.401 (4)
  PetaboxLoader3.resolve: 198.011 (2)
  load_resource: 356.355
*/