AMR/node_modules/caniuse-db/features-json/css-variables.json

{
  "title":"CSS Variables (Custom Properties)",
  "description":"Permits the declaration and usage of cascading variables in stylesheets.",
  "spec":"https://www.w3.org/TR/css-variables/",
  "status":"cr",
  "links":[
    {
      "url":"https://hacks.mozilla.org/2013/12/css-variables-in-firefox-nightly/",
      "title":"Mozilla hacks article (older syntax)"
    },
    {
      "url":"https://developer.mozilla.org/en-US/docs/Web/CSS/Using_CSS_variables",
      "title":"MDN Web Docs - Using CSS variables"
    },
    {
      "url":"https://blogs.windows.com/msedgedev/2017/03/24/css-custom-properties/",
      "title":"Edge Dev Blog post"
    },
    {
      "url":"https://github.com/nuxodin/ie11CustomProperties",
      "title":"Polyfill for IE11"
    }
  ],
  "bugs":[
    {
      "description":"In Edge 15 is not possible to use css variables in pseudo elements [see bug](https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/11495448/)"
    },
    {
      "description":"In Edge 15 animations with css variables may cause the webpage to crash [see bug](https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/11676012/)"
    },
    {
      "description":"In Edge 15, nested calculations with css variables are not computed and are ignored [see bug](https://web.archive.org/web/20171216000230/https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/12143022/)"
    },
    {
      "description":"In Safari 9.1 to 9.3, nested calculations using intermediate CSS Custom Properties don't work and are ignored [see bug](https://bugs.webkit.org/show_bug.cgi?id=161002)"
    }
  ],
  "categories":[
    "CSS3"
  ],
  "stats":{
    "ie":{
      "5.5":"n",
      "6":"n",
      "7":"n",
      "8":"n",
      "9":"n",
      "10":"n",
      "11":"n"
    },
    "edge":{
      "12":"n",
      "13":"n",
      "14":"n",
      "15":"a #2",
      "16":"y",
      "17":"y",
      "18":"y",
      "79":"y",
      "80":"y",
      "81":"y",
      "83":"y",
      "84":"y",
      "85":"y",
      "86":"y",
      "87":"y",
      "88":"y",
      "89":"y",
      "90":"y",
      "91":"y",
      "92":"y",
      "93":"y",
      "94":"y",
      "95":"y",
      "96":"y",
      "97":"y",
      "98":"y",
      "99":"y"
    },
    "firefox":{
      "2":"n",
      "3":"n",
      "3.5":"n",
      "3.6":"n",
      "4":"n",
      "5":"n",
      "6":"n",
      "7":"n",
      "8":"n",
      "9":"n",
      "10":"n",
      "11":"n",
      "12":"n",
      "13":"n",
      "14":"n",
      "15":"n",
      "16":"n",
      "17":"n",
      "18":"n",
      "19":"n",
      "20":"n",
      "21":"n",
      "22":"n",
      "23":"n",
      "24":"n",
      "25":"n",
      "26":"n",
      "27":"n",
      "28":"n",
      "29":"n",
      "30":"n",
      "31":"y",
      "32":"y",
      "33":"y",
      "34":"y",
      "35":"y",
      "36":"y",
      "37":"y",
      "38":"y",
      "39":"y",
      "40":"y",
      "41":"y",
      "42":"y",
      "43":"y",
      "44":"y",
      "45":"y",
      "46":"y",
      "47":"y",
      "48":"y",
      "49":"y",
      "50":"y",
      "51":"y",
      "52":"y",
      "53":"y",
      "54":"y",
      "55":"y",
      "56":"y",
      "57":"y",
      "58":"y",
      "59":"y",
      "60":"y",
      "61":"y",
      "62":"y",
      "63":"y",
      "64":"y",
      "65":"y",
      "66":"y",
      "67":"y",
      "68":"y",
      "69":"y",
      "70":"y",
      "71":"y",
      "72":"y",
      "73":"y",
      "74":"y",
      "75":"y",
      "76":"y",
      "77":"y",
      "78":"y",
      "79":"y",
      "80":"y",
      "81":"y",
      "82":"y",
      "83":"y",
      "84":"y",
      "85":"y",
      "86":"y",
      "87":"y",
      "88":"y",
      "89":"y",
      "90":"y",
      "91":"y",
      "92":"y",
      "93":"y",
      "94":"y",
      "95":"y",
      "96":"y",
      "97":"y",
      "98":"y",
      "99":"y",
      "100":"y"
    },
    "chrome":{
      "4":"n",
      "5":"n",
      "6":"n",
      "7":"n",
      "8":"n",
      "9":"n",
      "10":"n",
      "11":"n",
      "12":"n",
      "13":"n",
      "14":"n",
      "15":"n",
      "16":"n",
      "17":"n",
      "18":"n",
      "19":"n",
      "20":"n",
      "21":"n",
      "22":"n",
      "23":"n",
      "24":"n",
      "25":"n",
      "26":"n",
      "27":"n",
      "28":"n",
      "29":"n",
      "30":"n",
      "31":"n",
      "32":"n",
      "33":"n",
      "34":"n",
      "35":"n",
      "36":"n",
      "37":"n",
      "38":"n",
      "39":"n",
      "40":"n",
      "41":"n",
      "42":"n",
      "43":"n",
      "44":"n",
      "45":"n",
      "46":"n",
      "47":"n",
      "48":"n d #1",
      "49":"y",
      "50":"y",
      "51":"y",
      "52":"y",
      "53":"y",
      "54":"y",
      "55":"y",
      "56":"y",
      "57":"y",
      "58":"y",
      "59":"y",
      "60":"y",
      "61":"y",
      "62":"y",
      "63":"y",
      "64":"y",
      "65":"y",
      "66":"y",
      "67":"y",
      "68":"y",
      "69":"y",
      "70":"y",
      "71":"y",
      "72":"y",
      "73":"y",
      "74":"y",
      "75":"y",
      "76":"y",
      "77":"y",
      "78":"y",
      "79":"y",
      "80":"y",
      "81":"y",
      "83":"y",
      "84":"y",
      "85":"y",
      "86":"y",
      "87":"y",
      "88":"y",
      "89":"y",
      "90":"y",
      "91":"y",
      "92":"y",
      "93":"y",
      "94":"y",
      "95":"y",
      "96":"y",
      "97":"y",
      "98":"y",
      "99":"y",
      "100":"y",
      "101":"y",
      "102":"y",
      "103":"y"
    },
    "safari":{
      "3.1":"n",
      "3.2":"n",
      "4":"n",
      "5":"n",
      "5.1":"n",
      "6":"n",
      "6.1":"n",
      "7":"n",
      "7.1":"n",
      "8":"n",
      "9":"n",
      "9.1":"a #2",
      "10":"y",
      "10.1":"y",
      "11":"y",
      "11.1":"y",
      "12":"y",
      "12.1":"y",
      "13":"y",
      "13.1":"y",
      "14":"y",
      "14.1":"y",
      "15":"y",
      "15.1":"y",
      "15.2-15.3":"y",
      "15.4":"y",
      "TP":"y"
    },
    "opera":{
      "9":"n",
      "9.5-9.6":"n",
      "10.0-10.1":"n",
      "10.5":"n",
      "10.6":"n",
      "11":"n",
      "11.1":"n",
      "11.5":"n",
      "11.6":"n",
      "12":"n",
      "12.1":"n",
      "15":"n",
      "16":"n",
      "17":"n",
      "18":"n",
      "19":"n",
      "20":"n",
      "21":"n",
      "22":"n",
      "23":"n",
      "24":"n",
      "25":"n",
      "26":"n",
      "27":"n",
      "28":"n",
      "29":"n",
      "30":"n",
      "31":"n",
      "32":"n",
      "33":"n",
      "34":"n",
      "35":"n d #1",
      "36":"y",
      "37":"y",
      "38":"y",
      "39":"y",
      "40":"y",
      "41":"y",
      "42":"y",
      "43":"y",
      "44":"y",
      "45":"y",
      "46":"y",
      "47":"y",
      "48":"y",
      "49":"y",
      "50":"y",
      "51":"y",
      "52":"y",
      "53":"y",
      "54":"y",
      "55":"y",
      "56":"y",
      "57":"y",
      "58":"y",
      "60":"y",
      "62":"y",
      "63":"y",
      "64":"y",
      "65":"y",
      "66":"y",
      "67":"y",
      "68":"y",
      "69":"y",
      "70":"y",
      "71":"y",
      "72":"y",
      "73":"y",
      "74":"y",
      "75":"y",
      "76":"y",
      "77":"y",
      "78":"y",
      "79":"y",
      "80":"y",
      "81":"y",
      "82":"y",
      "83":"y"
    },
    "ios_saf":{
      "3.2":"n",
      "4.0-4.1":"n",
      "4.2-4.3":"n",
      "5.0-5.1":"n",
      "6.0-6.1":"n",
      "7.0-7.1":"n",
      "8":"n",
      "8.1-8.4":"n",
      "9.0-9.2":"n",
      "9.3":"a #2",
      "10.0-10.2":"y",
      "10.3":"y",
      "11.0-11.2":"y",
      "11.3-11.4":"y",
      "12.0-12.1":"y",
      "12.2-12.5":"y",
      "13.0-13.1":"y",
      "13.2":"y",
      "13.3":"y",
      "13.4-13.7":"y",
      "14.0-14.4":"y",
      "14.5-14.8":"y",
      "15.0-15.1":"y",
      "15.2-15.3":"y",
      "15.4":"y"
    },
    "op_mini":{
      "all":"n"
    },
    "android":{
      "2.1":"n",
      "2.2":"n",
      "2.3":"n",
      "3":"n",
      "4":"n",
      "4.1":"n",
      "4.2-4.3":"n",
      "4.4":"n",
      "4.4.3-4.4.4":"n",
      "99":"y"
    },
    "bb":{
      "7":"n",
      "10":"n"
    },
    "op_mob":{
      "10":"n",
      "11":"n",
      "11.1":"n",
      "11.5":"n",
      "12":"n",
      "12.1":"n",
      "64":"y"
    },
    "and_chr":{
      "100":"y"
    },
    "and_ff":{
      "98":"y"
    },
    "ie_mob":{
      "10":"n",
      "11":"n"
    },
    "and_uc":{
      "12.12":"y"
    },
    "samsung":{
      "4":"n",
      "5.0-5.4":"y",
      "6.2-6.4":"y",
      "7.2-7.4":"y",
      "8.2":"y",
      "9.2":"y",
      "10.1":"y",
      "11.1-11.2":"y",
      "12.0":"y",
      "13.0":"y",
      "14.0":"y",
      "15.0":"y",
      "16.0":"y"
    },
    "and_qq":{
      "10.4":"n"
    },
    "baidu":{
      "7.12":"n"
    },
    "kaios":{
      "2.5":"y"
    }
  },
  "notes":"",
  "notes_by_num":{
    "1":"Enabled through the \"Experimental Web Platform features\" flag in `chrome://flags`",
    "2":"Partial support is due to bugs present (see known issues)",
    "3":"Partial support is due to bugs present (see known issues)"
  },
  "usage_perc_y":94.27,
  "usage_perc_a":0.11,
  "ucprefix":false,
  "parent":"",
  "keywords":"css variables,cssvariables,vars,custom properties,var(),--var",
  "ie_id":"csscustompropertiesakacssvariables",
  "chrome_id":"6401356696911872",
  "firefox_id":"css-variables",
  "webkit_id":"specification-css-variables",
  "shown":true
}