/*! normalize.css v2.1.3 | MIT License | git.io/normalize */

/* ==========================================================================
   HTML5 display definitions
   ========================================================================== */

/**
 * Correct `block` display not defined in IE 8/9.
 */

article,
aside,
details,
figcaption,
figure,
footer,
header,
hgroup,
main,
nav,
section,
summary {
  display: block;
}

/**
 * Correct `inline-block` display not defined in IE 8/9.
 */

audio,
canvas,
video {
  display: inline-block;
}

/**
 * Prevent modern browsers from displaying `audio` without controls.
 * Remove excess height in iOS 5 devices.
 */

audio:not([controls]) {
  display: none;
  height: 0;
}

/**
 * Address `[hidden]` styling not present in IE 8/9.
 * Hide the `template` element in IE, Safari, and Firefox < 22.
 */

[hidden],
template {
  display: none;
}

/* ==========================================================================
   Base
   ========================================================================== */

/**
 * 1. Set default font family to sans-serif.
 * 2. Prevent iOS text size adjust after orientation change, without disabling
 *    user zoom.
 */

html {
  font-family: sans-serif; /* 1 */
  -ms-text-size-adjust: 100%; /* 2 */
  -webkit-text-size-adjust: 100%; /* 2 */
}

/**
 * Remove default margin.
 */

body {
  margin: 0;
}

/* ==========================================================================
   Links
   ========================================================================== */

/**
 * Remove the gray background color from active links in IE 10.
 */

a {
  background: transparent;
}

/**
 * Address `outline` inconsistency between Chrome and other browsers.
 */

a:focus {
  outline: thin dotted;
}

/**
 * Improve readability when focused and also mouse hovered in all browsers.
 */

a:active,
a:hover {
  outline: 0;
}

/* ==========================================================================
   Typography
   ========================================================================== */

/**
 * Address variable `h1` font-size and margin within `section` and `article`
 * contexts in Firefox 4+, Safari 5, and Chrome.
 */

h1 {
  font-size: 2em;
  margin: 0.67em 0;
}

/**
 * Address styling not present in IE 8/9, Safari 5, and Chrome.
 */

abbr[title] {
  border-bottom: 1px dotted;
}

/**
 * Address style set to `bolder` in Firefox 4+, Safari 5, and Chrome.
 */

b,
strong {
  font-weight: bold;
}

/**
 * Address styling not present in Safari 5 and Chrome.
 */

dfn {
  font-style: italic;
}

/**
 * Address differences between Firefox and other browsers.
 */

hr {
  -moz-box-sizing: content-box;
  box-sizing: content-box;
  height: 0;
}

/**
 * Address styling not present in IE 8/9.
 */

mark {
  background: #ff0;
  color: #000;
}

/**
 * Correct font family set oddly in Safari 5 and Chrome.
 */

code,
kbd,
pre,
samp {
  font-family: monospace, serif;
  font-size: 1em;
}

/**
 * Improve readability of pre-formatted text in all browsers.
 */

pre {
  white-space: pre-wrap;
}

/**
 * Set consistent quote types.
 */

q {
  quotes: "\201C""\201D""\2018""\2019";
}

/**
 * Address inconsistent and variable font size in all browsers.
 */

small {
  font-size: 80%;
}

/**
 * Prevent `sub` and `sup` affecting `line-height` in all browsers.
 */

sub,
sup {
  font-size: 75%;
  line-height: 0;
  position: relative;
  vertical-align: baseline;
}

sup {
  top: -0.5em;
}

sub {
  bottom: -0.25em;
}

/* ==========================================================================
   Embedded content
   ========================================================================== */

/**
 * Remove border when inside `a` element in IE 8/9.
 */

img {
  border: 0;
}

/**
 * Correct overflow displayed oddly in IE 9.
 */

svg:not(:root) {
  overflow: hidden;
}

/* ==========================================================================
   Figures
   ========================================================================== */

/**
 * Address margin not present in IE 8/9 and Safari 5.
 */

figure {
  margin: 0;
}

/* ==========================================================================
   Forms
   ========================================================================== */

/**
 * Define consistent border, margin, and padding.
 */

fieldset {
  border: 1px solid #c0c0c0;
  margin: 0 2px;
  padding: 0.35em 0.625em 0.75em;
}

/**
 * 1. Correct `color` not being inherited in IE 8/9.
 * 2. Remove padding so people aren't caught out if they zero out fieldsets.
 */

legend {
  border: 0; /* 1 */
  padding: 0; /* 2 */
}

/**
 * 1. Correct font family not being inherited in all browsers.
 * 2. Correct font size not being inherited in all browsers.
 * 3. Address margins set differently in Firefox 4+, Safari 5, and Chrome.
 */

button,
input,
select,
textarea {
  font-family: inherit; /* 1 */
  font-size: 100%; /* 2 */
  margin: 0; /* 3 */
}

/**
 * Address Firefox 4+ setting `line-height` on `input` using `!important` in
 * the UA stylesheet.
 */

button,
input {
  line-height: normal;
}

/**
 * Address inconsistent `text-transform` inheritance for `button` and `select`.
 * All other form control elements do not inherit `text-transform` values.
 * Correct `button` style inheritance in Chrome, Safari 5+, and IE 8+.
 * Correct `select` style inheritance in Firefox 4+ and Opera.
 */

button,
select {
  text-transform: none;
}

/**
 * 1. Avoid the WebKit bug in Android 4.0.* where (2) destroys native `audio`
 *    and `video` controls.
 * 2. Correct inability to style clickable `input` types in iOS.
 * 3. Improve usability and consistency of cursor style between image-type
 *    `input` and others.
 */

button,
html input[type="button"], /* 1 */
input[type="reset"],
input[type="submit"] {
  -webkit-appearance: button; /* 2 */
  cursor: pointer; /* 3 */
}

/**
 * Re-set default cursor for disabled elements.
 */

button[disabled],
html input[disabled] {
  cursor: default;
}

/**
 * 1. Address box sizing set to `content-box` in IE 8/9/10.
 * 2. Remove excess padding in IE 8/9/10.
 */

input[type="checkbox"],
input[type="radio"] {
  box-sizing: border-box; /* 1 */
  padding: 0; /* 2 */
}

/**
 * 1. Address `appearance` set to `searchfield` in Safari 5 and Chrome.
 * 2. Address `box-sizing` set to `border-box` in Safari 5 and Chrome
 *    (include `-moz` to future-proof).
 */

input[type="search"] {
  -webkit-appearance: textfield; /* 1 */
  -moz-box-sizing: content-box;
  -webkit-box-sizing: content-box; /* 2 */
  box-sizing: content-box;
}

/**
 * Remove inner padding and search cancel button in Safari 5 and Chrome
 * on OS X.
 */

input[type="search"]::-webkit-search-cancel-button,
input[type="search"]::-webkit-search-decoration {
  -webkit-appearance: none;
}

/**
 * Remove inner padding and border in Firefox 4+.
 */

button::-moz-focus-inner,
input::-moz-focus-inner {
  border: 0;
  padding: 0;
}

/**
 * 1. Remove default vertical scrollbar in IE 8/9.
 * 2. Improve readability and alignment in all browsers.
 */

textarea {
  overflow: auto; /* 1 */
  vertical-align: top; /* 2 */
}

/* ==========================================================================
   Tables
   ========================================================================== */

/**
 * Remove most spacing between table cells.
 */

table {
  border-collapse: collapse;
  border-spacing: 0;
}

.page-header, .document-toc-container, .loading-bar, #nav-access, .sidebar, .newsletter-container, .metadata {display:none !important} .content-layout {grid-template-columns: 100% !important; grid-template-rows: 1fr !important; grid-template-areas: 'main' !important;} .blockIndicator, .geckoVersionNote, .inheritsbox, .note, .notice, .overheadIndicator, .standardNoteBlock, .warning, .text-content p, .text-content dl, .text-content ol, .text-content ul {max-width:none !important; } #wikiArticle {border-bottom: none !important} .content-layout {max-width:none !important} .live .example-choice {align-items: initial} .article {padding: 30px 12px 30px 12px !important} .nav-footer {margin:0 -12px !important} .nav-footer {padding:60px 20px !important} .archived {position:static !important} #react-container > #nav-footer {display:none !important} .document-page .page-content-container {display:block !important} .locale-container {display:none !important} .bc-table .bc-history-link, .bc-table .ic-footnote {display:none !important} .ic-prefix {height:36px !important} .breadcrumb-locale-container {display:block} .article dl, .article ol, .article p, .article ul {max-width:none !important} .breadcrumbs li, .breadcrumbs li a {display:inline !important} .page-wrapper {display:block !important} .main-page-content dl, .main-page-content ol, .main-page-content p, .main-page-content ul {max-width:none !important} .language-toggle {display:none !important} .breadcrumb-locale-container {margin-top: 0 !important} .main-page-content iframe {width:100%} .toc, #sidebar-quicklinks, .top-navigation, .article-actions {display:none !important} .article-wrapper {display:block !important} .table-scroll {width:100% !important; margin:0 0 !important;} .article-actions-container {min-height:24px !important; max-height:24px !important;} .breadcrumbs-container li {font-size:13px !important; line-height:1.3; -webkit-text-size-adjust:none !important;} .article-actions-container .container {padding-left: 10px !important; padding-right:10px !important}  .breadcrumbs-container li {display:inline-flex !important} .sidebar-button {display:none !important} .article-actions-container {max-height:none !important} .article-actions-container .container {margin-left:0 !important} .main-wrapper {display:block !important} .main-content {padding-top:1.5em !important} .main-page-content h1 a[href^='#']:hover:after, .main-page-content h2 a[href^='#']:hover:after, .main-page-content h3 a[href^='#']:hover:after, .main-page-content h4 a[href^='#']:hover:after, .main-page-content h5 a[href^='#']:hover:after, .main-page-content h6 a[href^='#']:hover:after {content:none !important} .main-page-content h1 a:focus, .main-page-content h1 a:hover, .main-page-content h2 a:focus, .main-page-content h2 a:hover, .main-page-content h3 a:focus, .main-page-content h3 a:hover, .main-page-content h4 a:focus, .main-page-content h4 a:hover, .main-page-content h5 a:focus, .main-page-content h5 a:hover, .main-page-content h6 a:focus, .main-page-content h6 a:hover {text-decoration: none} html {scroll-padding-top:24px !important; scroll-behavior: auto !important} .table-container {width:100% !important; margin: 0 0 !important} .main-page-content figure iframe {width: auto !important} .sidebar-container {display:none !important} .main-page-content h1 a[href^='#']:before, .main-page-content h2 a[href^='#']:before, .main-page-content h3 a[href^='#']:before, .main-page-content h4 a[href^='#']:before, .main-page-content h5 a[href^='#']:before, .main-page-content h6 a[href^='#']:before {display:none !important} body {--top-banner-height: 0 !important;} .article-actions-container {height:24px !important} .top-banner {display:none !important} .main-page-content iframe {width:calc(100% - 2rem - 2px) !important} aside.article-footer {display:none !important}