mdn-browser-compat-data

{ "css": { "at-rules": { "media": { "__compat": { "description": "<code>@media</code>", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@media", "support": { "chrome": { "version_added": "1" }, "chrome_android": { "version_added": null }, "edge": { "version_added": true }, "edge_mobile": { "version_added": true }, "firefox": { "version_added": "1" }, "firefox_android": { "version_added": "4" }, "ie": { "version_added": "6" }, "opera": { "version_added": "9.2" }, "opera_android": { "version_added": "9" }, "safari": { "version_added": "1.3" }, "safari_ios": { "version_added": "3.1" }, "samsunginternet_android": { "version_added": null }, "webview_android": { "version_added": "1" } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } }, "any-hover": { "__compat": { "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@media/any-hover", "description": "<code>any-hover</code> media feature", "support": { "chrome": { "version_added": "41" }, "chrome_android": { "version_added": "41" }, "edge": { "version_added": "16" }, "edge_mobile": { "version_added": false }, "firefox": { "version_added": "64" }, "firefox_android": { "version_added": "64" }, "ie": { "version_added": false }, "opera": { "version_added": "28" }, "opera_android": { "version_added": "28" }, "safari": { "version_added": "9" }, "safari_ios": { "version_added": "9.2" }, "samsunginternet_android": { "version_added": "5.0" }, "webview_android": { "version_added": "41" } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } }, "any-pointer": { "__compat": { "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@media/any-pointer", "description": "<code>any-pointer</code> media feature", "support": { "chrome": { "version_added": "41" }, "chrome_android": { "version_added": "41" }, "edge": { "version_added": "12" }, "edge_mobile": { "version_added": "12" }, "firefox": { "version_added": "64" }, "firefox_android": { "version_added": "64" }, "ie": { "version_added": false }, "opera": { "version_added": "28" }, "opera_android": { "version_added": "28" }, "safari": { "version_added": "9" }, "safari_ios": { "version_added": "9.2" }, "webview_android": { "version_added": "41" } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } }, "aspect-ratio": { "__compat": { "description": "<code>aspect-ratio</code> media feature", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@media/aspect-ratio", "support": { "chrome": { "version_added": "4" }, "chrome_android": { "version_added": null }, "edge": { "version_added": null }, "edge_mobile": { "version_added": null }, "firefox": { "version_added": "3.5" }, "firefox_android": { "version_added": null }, "ie": { "version_added": "9" }, "opera": { "version_added": "53" }, "opera_android": { "version_added": null }, "safari": { "version_added": true }, "safari_ios": { "version_added": true }, "samsunginternet_android": { "version_added": true }, "webview_android": { "version_added": true } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } }, "calc": { "__compat": { "description": "<code>calc()</code> expressions", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/calc", "support": { "chrome": { "version_added": "66" }, "chrome_android": { "version_added": "66" }, "edge": { "version_added": null }, "edge_mobile": { "version_added": null }, "firefox": { "version_added": null }, "firefox_android": { "version_added": null }, "ie": { "version_added": null }, "opera": { "version_added": null }, "opera_android": { "version_added": null }, "safari": { "version_added": null }, "safari_ios": { "version_added": null }, "samsunginternet_android": { "version_added": null }, "webview_android": { "version_added": "66" } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } }, "color": { "__compat": { "description": "<code>color</code> media feature", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@media/color", "support": { "chrome": { "version_added": true }, "chrome_android": { "version_added": null }, "edge": { "version_added": null }, "edge_mobile": { "version_added": null }, "firefox": { "version_added": "2" }, "firefox_android": { "version_added": "4" }, "ie": { "version_added": null }, "opera": { "version_added": true }, "opera_android": { "version_added": null }, "safari": { "version_added": true }, "safari_ios": { "version_added": null }, "samsunginternet_android": { "version_added": null }, "webview_android": { "version_added": null } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } }, "color-gamut": { "__compat": { "description": "<code>color-gamut</code> media feature", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@media/color-gamut", "support": { "chrome": { "version_added": "58" }, "chrome_android": { "version_added": "58" }, "edge": { "version_added": null }, "edge_mobile": { "version_added": null }, "firefox": { "version_added": false }, "firefox_android": { "version_added": false }, "ie": { "version_added": false }, "opera": { "version_added": "45" }, "opera_android": { "version_added": "45" }, "safari": { "version_added": true }, "safari_ios": { "version_added": null }, "samsunginternet_android": { "version_added": null }, "webview_android": { "version_added": null } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } }, "color-index": { "__compat": { "description": "<code>color-index</code> media feature", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@media/color-index", "support": { "chrome": { "version_added": true }, "chrome_android": { "version_added": null }, "edge": { "version_added": null }, "edge_mobile": { "version_added": null }, "firefox": { "version_added": false }, "firefox_android": { "version_added": null }, "ie": { "version_added": false }, "opera": { "version_added": null }, "opera_android": { "version_added": null }, "safari": { "version_added": null }, "safari_ios": { "version_added": null }, "samsunginternet_android": { "version_added": null }, "webview_android": { "version_added": null } }, "status": { "experimental": false, "standard_track": false, "deprecated": false } } }, "device-aspect-ratio": { "__compat": { "description": "<code>device-aspect-ratio</code> media feature", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@media/device-aspect-ratio", "support": { "chrome": { "version_added": true }, "chrome_android": { "version_added": true }, "edge": { "version_added": null }, "edge_mobile": { "version_added": null }, "firefox": { "version_added": "2" }, "firefox_android": { "version_added": "4" }, "ie": { "version_added": null }, "opera": { "version_added": null }, "opera_android": { "version_added": null }, "safari": { "version_added": null }, "safari_ios": { "version_added": null }, "samsunginternet_android": { "version_added": null }, "webview_android": { "version_added": null } }, "status": { "experimental": false, "standard_track": false, "deprecated": true } } }, "device-height": { "__compat": { "description": "<code>device-height</code> media feature", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@media/device-height", "support": { "chrome": { "version_added": true }, "chrome_android": { "version_added": true }, "edge": { "version_added": null }, "edge_mobile": { "version_added": null }, "firefox": { "version_added": "2" }, "firefox_android": { "version_added": "4" }, "ie": { "version_added": null }, "opera": { "version_added": null }, "opera_android": { "version_added": null }, "safari": { "version_added": null }, "safari_ios": { "version_added": null }, "samsunginternet_android": { "version_added": null }, "webview_android": { "version_added": null } }, "status": { "experimental": false, "standard_track": false, "deprecated": true } } }, "device-width": { "__compat": { "description": "<code>device-width</code> media feature", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@media/device-width", "support": { "chrome": { "version_added": true }, "chrome_android": { "version_added": true }, "edge": { "version_added": null }, "edge_mobile": { "version_added": null }, "firefox": { "version_added": "2" }, "firefox_android": { "version_added": "4" }, "ie": { "version_added": null }, "opera": { "version_added": null }, "opera_android": { "version_added": null }, "safari": { "version_added": null }, "safari_ios": { "version_added": null }, "samsunginternet_android": { "version_added": null }, "webview_android": { "version_added": null } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } }, "display-mode": { "__compat": { "description": "<code>display-mode</code> media feature", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@media/display-mode", "support": { "chrome": { "version_added": "46" }, "chrome_android": { "version_added": "46" }, "edge": { "version_added": false }, "edge_mobile": { "version_added": false }, "firefox": { "version_added": "47", "notes": "Firefox 47 and later support <code>display-mode</code> values <code>fullscreen</code> and <code>browser</code>. Firefox 57 added support for <code>minimal-ui</code> and <code>standalone</code> values." }, "firefox_android": { "version_added": "47", "notes": "Firefox 47 and later support <code>display-mode</code> values <code>fullscreen</code> and <code>browser</code>. Firefox 57 added support for <code>minimal-ui</code> and <code>standalone</code> values." }, "ie": { "version_added": null }, "opera": { "version_added": null }, "opera_android": { "version_added": null }, "safari": { "version_added": null }, "safari_ios": { "version_added": null }, "samsunginternet_android": { "version_added": false }, "webview_android": { "version_added": null } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } }, "grid": { "__compat": { "description": "<code>grid</code> media feature", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@media/grid", "support": { "chrome": { "version_added": true }, "chrome_android": { "version_added": null }, "edge": { "version_added": null }, "edge_mobile": { "version_added": null }, "firefox": { "version_added": "2" }, "firefox_android": { "version_added": "4" }, "ie": { "version_added": null }, "opera": { "version_added": true }, "opera_android": { "version_added": null }, "safari": { "version_added": true }, "safari_ios": { "version_added": null }, "samsunginternet_android": { "version_added": null }, "webview_android": { "version_added": null } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } }, "height": { "__compat": { "description": "<code>height</code> media feature", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@media/height", "support": { "chrome": { "version_added": null }, "chrome_android": { "version_added": null }, "edge": { "version_added": null }, "edge_mobile": { "version_added": null }, "firefox": { "version_added": "2" }, "firefox_android": { "version_added": "4" }, "ie": { "version_added": "9" }, "opera": { "version_added": null }, "opera_android": { "version_added": null }, "safari": { "version_added": null }, "safari_ios": { "version_added": null }, "samsunginternet_android": { "version_added": null }, "webview_android": { "version_added": null } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } }, "hover": { "__compat": { "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@media/hover", "description": "<code>hover</code> media feature", "support": { "chrome": { "version_added": "38", "notes": "Before Chrome 41, the implementation was buggy and reported <code>(hover: none)</code> on non-touch-based computers with a mouse/trackpad. See <a href='https://crbug.com/441613'>bug 441613</a>." }, "chrome_android": { "version_added": "50" }, "edge": { "version_added": "12" }, "edge_mobile": { "version_added": "12" }, "firefox": { "version_added": "64" }, "firefox_android": { "version_added": "64" }, "ie": { "version_added": false }, "opera": { "version_added": "28" }, "opera_android": { "version_added": "28" }, "safari": { "version_added": "9" }, "safari_ios": { "version_added": "9.2" }, "webview_android": { "version_added": null } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } }, "inverted-colors": { "__compat": { "description": "<code>inverted-colors</code> media feature", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@media/inverted-colors", "support": { "chrome": { "version_added": false }, "chrome_android": { "version_added": false }, "edge": { "version_added": null }, "edge_mobile": { "version_added": null }, "firefox": { "version_added": false }, "firefox_android": { "version_added": false }, "ie": { "version_added": false }, "opera": { "version_added": false }, "opera_android": { "version_added": false }, "safari": { "version_added": true }, "safari_ios": { "version_added": true }, "samsunginternet_android": { "version_added": null }, "webview_android": { "version_added": null } }, "status": { "experimental": true, "standard_track": false, "deprecated": false } } }, "light-level": { "__compat": { "description": "<code>light-level</code> media feature", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@media/light-level", "support": { "chrome": { "version_added": false }, "chrome_android": { "version_added": false }, "edge": { "version_added": null }, "edge_mobile": { "version_added": null }, "firefox": { "version_added": false }, "firefox_android": { "version_added": false }, "ie": { "version_added": false }, "opera": { "version_added": false }, "opera_android": { "version_added": false }, "safari": { "version_added": false }, "safari_ios": { "version_added": false }, "samsunginternet_android": { "version_added": null }, "webview_android": { "version_added": false } }, "status": { "experimental": true, "standard_track": false, "deprecated": false } } }, "media_features": { "__compat": { "description": "Media feature expressions", "support": { "chrome": { "version_added": "1" }, "chrome_android": { "version_added": null }, "edge": { "version_added": true }, "edge_mobile": { "version_added": true }, "firefox": { "version_added": "1" }, "firefox_android": { "version_added": "4" }, "ie": { "version_added": "9" }, "opera": { "version_added": "9.2" }, "opera_android": { "version_added": "9" }, "safari": { "version_added": "1.3" }, "safari_ios": { "version_added": "3.1" }, "samsunginternet_android": { "version_added": null }, "webview_android": { "version_added": "1" } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } }, "media_query_values": { "__compat": { "description": "<a href='https://developer.mozilla.org/docs/Web/CSS/Media_Queries'>Media query</a> value support", "support": { "chrome": { "version_added": "66" }, "chrome_android": { "version_added": "66" }, "edge": { "version_added": false }, "edge_mobile": { "version_added": false }, "firefox": { "version_added": "59" }, "firefox_android": { "version_added": false }, "ie": { "version_added": false }, "opera": { "version_added": "53" }, "opera_android": { "version_added": "53" }, "safari": { "version_added": false }, "safari_ios": { "version_added": false }, "samsunginternet_android": { "version_added": false }, "webview_android": { "version_added": false } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } }, "monochrome": { "__compat": { "description": "<code>monochrome</code> media feature", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@media/monochrome", "support": { "chrome": { "version_added": true }, "chrome_android": { "version_added": null }, "edge": { "version_added": null }, "edge_mobile": { "version_added": null }, "firefox": { "version_added": "2" }, "firefox_android": { "version_added": "4" }, "ie": { "version_added": false }, "opera": { "version_added": true }, "opera_android": { "version_added": null }, "safari": { "version_added": true }, "safari_ios": { "version_added": null }, "samsunginternet_android": { "version_added": null }, "webview_android": { "version_added": null } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } }, "orientation": { "__compat": { "description": "<code>orientation</code> media feature", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@media/orientation", "support": { "chrome": { "version_added": true }, "chrome_android": { "version_added": null }, "edge": { "version_added": null }, "edge_mobile": { "version_added": null }, "firefox": { "version_added": "2" }, "firefox_android": { "version_added": "4" }, "ie": { "version_added": null }, "opera": { "version_added": true }, "opera_android": { "version_added": null }, "safari": { "version_added": true }, "safari_ios": { "version_added": null }, "samsunginternet_android": { "version_added": null }, "webview_android": { "version_added": true } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } }, "overflow-block": { "__compat": { "description": "<code>overflow-block</code> media feature", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@media/overflow-block", "support": { "chrome": { "version_added": false }, "chrome_android": { "version_added": false }, "edge": { "version_added": false }, "edge_mobile": { "version_added": false }, "firefox": { "version_added": "66" }, "firefox_android": { "version_added": "66" }, "ie": { "version_added": false }, "opera": { "version_added": false }, "opera_android": { "version_added": false }, "safari": { "version_added": false }, "safari_ios": { "version_added": false }, "samsunginternet_android": { "version_added": false }, "webview_android": { "version_added": false } }, "status": { "experimental": true, "standard_track": true, "deprecated": false } } }, "overflow-inline": { "__compat": { "description": "<code>overflow-inline</code> media feature", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@media/overflow-inline", "support": { "chrome": { "version_added": false }, "chrome_android": { "version_added": false }, "edge": { "version_added": false }, "edge_mobile": { "version_added": false }, "firefox": { "version_added": "66" }, "firefox_android": { "version_added": "66" }, "ie": { "version_added": false }, "opera": { "version_added": false }, "opera_android": { "version_added": false }, "safari": { "version_added": false }, "safari_ios": { "version_added": false }, "samsunginternet_android": { "version_added": false }, "webview_android": { "version_added": false } }, "status": { "experimental": true, "standard_track": true, "deprecated": false } } }, "pointer": { "__compat": { "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@media/pointer", "description": "<code>pointer</code> media feature", "support": { "chrome": { "version_added": "41" }, "chrome_android": { "version_added": "50" }, "edge": { "version_added": "12" }, "edge_mobile": { "version_added": "12" }, "firefox": { "version_added": "64" }, "firefox_android": { "version_added": "64" }, "ie": { "version_added": null }, "opera": { "version_added": "28" }, "opera_android": { "version_added": "28" }, "safari": { "version_added": "9" }, "safari_ios": { "version_added": "9.2" }, "webview_android": { "version_added": null } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } }, "prefers-color-scheme": { "__compat": { "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@media/prefers-color-scheme", "description": "<code>prefers-color-scheme</code> media feature", "support": { "chrome": { "version_added": false }, "chrome_android": { "version_added": false }, "edge": { "version_added": false }, "edge_mobile": { "version_added": false }, "firefox": { "version_added": "67" }, "firefox_android": { "version_added": "67" }, "ie": { "version_added": false }, "opera": { "version_added": false }, "opera_android": { "version_added": false }, "safari": { "version_added": "12.1" }, "safari_ios": { "version_added": false }, "webview_android": { "version_added": false } }, "status": { "experimental": true, "standard_track": true, "deprecated": false } } }, "prefers-reduced-motion": { "__compat": { "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@media/prefers-reduced-motion", "description": "<code>prefers-reduced-motion</code> media feature", "support": { "chrome": { "version_added": false }, "chrome_android": { "version_added": false }, "edge": { "version_added": false }, "edge_mobile": { "version_added": false }, "firefox": { "version_added": "63" }, "firefox_android": { "version_added": "64" }, "ie": { "version_added": false }, "opera": { "version_added": false }, "opera_android": { "version_added": false }, "safari": { "version_added": "10.1" }, "safari_ios": { "version_added": "10.3" }, "webview_android": { "version_added": false } }, "status": { "experimental": true, "standard_track": true, "deprecated": false } } }, "resolution": { "__compat": { "description": "<code>resolution</code> media feature", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@media/resolution", "support": { "chrome": { "version_added": "29" }, "chrome_android": { "version_added": null }, "edge": { "version_added": null }, "edge_mobile": { "version_added": null }, "firefox": [ { "version_added": "8" }, { "partial_implementation": true, "version_added": "3.5", "notes": "Supports <a href='https://developer.mozilla.org/docs/Web/CSS/integer'><code><integer></code></a> values only." } ], "firefox_android": { "version_added": null }, "ie": { "version_added": null }, "opera": { "version_added": true }, "opera_android": { "version_added": null }, "safari": { "version_added": null }, "safari_ios": { "version_added": null }, "samsunginternet_android": { "version_added": null }, "webview_android": { "version_added": null } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } }, "scan": { "__compat": { "description": "<code>scan</code> media feature", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@media/scan", "support": { "chrome": { "version_added": false }, "chrome_android": { "version_added": null }, "edge": { "version_added": null }, "edge_mobile": { "version_added": null }, "firefox": { "version_added": false }, "firefox_android": { "version_added": false }, "ie": { "version_added": false }, "opera": { "version_added": false }, "opera_android": { "version_added": null }, "safari": { "version_added": false }, "safari_ios": { "version_added": null }, "samsunginternet_android": { "version_added": null }, "webview_android": { "version_added": null } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } }, "scripting": { "__compat": { "description": "<code>scripting</code> media feature", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@media/scripting", "support": { "chrome": { "version_added": false, "notes": "See <a href='https://crbug.com/489957'>bug 489957</a>." }, "chrome_android": { "version_added": false, "notes": "See <a href='https://crbug.com/489957'>bug 489957</a>." }, "edge": { "version_added": null }, "edge_mobile": { "version_added": null }, "firefox": { "version_added": false, "notes": "See <a href='https://bugzil.la/1166581'>bug 1166581</a>." }, "firefox_android": { "version_added": false, "notes": "See <a href='https://bugzil.la/1166581'>bug 1166581</a>." }, "ie": { "version_added": false }, "opera": { "version_added": false }, "opera_android": { "version_added": false }, "safari": { "version_added": false }, "safari_ios": { "version_added": false }, "samsunginternet_android": { "version_added": null }, "webview_android": { "version_added": false, "notes": "See <a href='https://crbug.com/489957'>bug 489957</a>." } }, "status": { "experimental": true, "standard_track": false, "deprecated": false } } }, "speech_type": { "__compat": { "description": "<code>speech</code> media type", "support": { "chrome": { "version_added": false }, "chrome_android": { "version_added": null }, "edge": { "version_added": false }, "edge_mobile": { "version_added": false }, "firefox": { "version_added": false }, "firefox_android": { "version_added": false }, "ie": { "version_added": false }, "opera": { "version_added": "9.2" }, "opera_android": { "version_added": "9" }, "safari": { "version_added": false }, "safari_ios": { "version_added": false }, "samsunginternet_android": { "version_added": false }, "webview_android": { "version_added": false } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } }, "update": { "__compat": { "description": "<code>update</code> media feature", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@media/update-frequency", "support": { "chrome": { "version_added": false }, "chrome_android": { "version_added": null }, "edge": { "version_added": null }, "edge_mobile": { "version_added": null }, "firefox": { "version_added": false }, "firefox_android": { "version_added": null }, "ie": { "version_added": false }, "opera": { "version_added": false }, "opera_android": { "version_added": null }, "safari": { "version_added": false }, "safari_ios": { "version_added": null }, "samsunginternet_android": { "version_added": null }, "webview_android": { "version_added": null } }, "status": { "experimental": true, "standard_track": true, "deprecated": false } } }, "width": { "__compat": { "description": "<code>width</code> media feature", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@media/width", "support": { "chrome": { "version_added": true }, "chrome_android": { "version_added": null }, "edge": { "version_added": null }, "edge_mobile": { "version_added": null }, "firefox": { "version_added": "2" }, "firefox_android": { "version_added": "4" }, "ie": { "version_added": "9" }, "opera": { "version_added": true }, "opera_android": { "version_added": null }, "safari": { "version_added": true }, "safari_ios": { "version_added": null }, "samsunginternet_android": { "version_added": null }, "webview_android": { "version_added": null } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } }, "-moz-device-pixel-ratio": { "__compat": { "description": "<code>-moz-device-pixel-ratio</code> media feature", "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@media/-moz-device-pixel-ratio", "support": { "chrome": { "version_added": false }, "chrome_android": { "version_added": null }, "edge": { "version_added": null }, "edge_mobile": { "version_added": null }, "firefox": { "version_added": "4" }, "fi