{
  "css": {
    "properties": {
      "background-size": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/background-size",
          "support": {
            "chrome": [
              {
                "version_added": "3"
              },
              {
                "version_added": "1",
                "prefix": "-webkit-",
                "notes": "WebKit-based browsers originally implemented an older draft of CSS3 <code>background-size</code> in which an omitted second value is treated as duplicating the first value; this draft does not include the <code>contain</code> or <code>cover</code> keywords."
              }
            ],
            "chrome_android": [
              {
                "version_added": "18"
              },
              {
                "version_added": "18",
                "prefix": "-webkit-",
                "notes": "WebKit-based browsers originally implemented an older draft of CSS3 <code>background-size</code> in which an omitted second value is treated as duplicating the first value; this draft does not include the <code>contain</code> or <code>cover</code> keywords."
              }
            ],
            "edge": {
              "version_added": "12"
            },
            "firefox": [
              {
                "version_added": "4"
              },
              {
                "version_added": "49",
                "prefix": "-webkit-"
              },
              {
                "prefix": "-moz-",
                "version_added": "3.6",
                "version_removed": "4"
              }
            ],
            "firefox_android": [
              {
                "version_added": "4"
              },
              {
                "version_added": "49",
                "prefix": "-webkit-"
              }
            ],
            "ie": {
              "version_added": "9"
            },
            "opera": [
              {
                "version_added": "10"
              },
              {
                "version_added": "15",
                "prefix": "-webkit-",
                "notes": "WebKit-based browsers originally implemented an older draft of CSS3 <code>background-size</code> in which an omitted second value is treated as duplicating the first value; this draft does not include the <code>contain</code> or <code>cover</code> keywords."
              },
              {
                "version_added": "9.5",
                "version_removed": "15",
                "prefix": "-o-",
                "notes": "Opera 9.5's computation of the background positioning area is incorrect for fixed backgrounds. Opera 9.5 also interprets the two-value form as a horizontal scaling factor and, from appearances, a vertical clipping dimension. This has been fixed in Opera 10."
              }
            ],
            "opera_android": [
              {
                "version_added": "10.1"
              },
              {
                "version_added": "14",
                "prefix": "-webkit-",
                "notes": "WebKit-based browsers originally implemented an older draft of CSS3 <code>background-size</code> in which an omitted second value is treated as duplicating the first value; this draft does not include the <code>contain</code> or <code>cover</code> keywords."
              },
              {
                "version_added": "10.1",
                "version_removed": "14",
                "prefix": "-o-",
                "notes": "Opera 9.5's computation of the background positioning area is incorrect for fixed backgrounds. Opera 9.5 also interprets the two-value form as a horizontal scaling factor and, from appearances, a vertical clipping dimension. This has been fixed in Opera 10."
              }
            ],
            "safari": [
              {
                "version_added": "5"
              },
              {
                "prefix": "-webkit-",
                "version_added": "3",
                "notes": "WebKit-based browsers originally implemented an older draft of CSS3 <code>background-size</code> in which an omitted second value is treated as duplicating the first value; this draft does not include the <code>contain</code> or <code>cover</code> keywords."
              }
            ],
            "safari_ios": [
              {
                "version_added": "4.2"
              },
              {
                "prefix": "-webkit-",
                "version_added": "1",
                "notes": "WebKit-based browsers originally implemented an older draft of CSS3 <code>background-size</code> in which an omitted second value is treated as duplicating the first value; this draft does not include the <code>contain</code> or <code>cover</code> keywords."
              }
            ],
            "samsunginternet_android": [
              {
                "version_added": "1.0"
              },
              {
                "prefix": "-webkit-",
                "version_added": "1.0",
                "notes": "WebKit-based browsers originally implemented an older draft of CSS3 <code>background-size</code> in which an omitted second value is treated as duplicating the first value; this draft does not include the <code>contain</code> or <code>cover</code> keywords."
              }
            ],
            "webview_android": [
              {
                "version_added": "2.3"
              },
              {
                "version_added": "≤37",
                "prefix": "-webkit-",
                "notes": "WebKit-based browsers originally implemented an older draft of CSS3 <code>background-size</code> in which an omitted second value is treated as duplicating the first value; this draft does not include the <code>contain</code> or <code>cover</code> keywords."
              }
            ]
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "contain_and_cover": {
          "__compat": {
            "description": "<code>contain</code> and <code>cover</code>",
            "support": {
              "chrome": {
                "version_added": "3"
              },
              "chrome_android": {
                "version_added": "18"
              },
              "edge": {
                "version_added": "12"
              },
              "firefox": {
                "version_added": "3.6"
              },
              "firefox_android": {
                "version_added": "4"
              },
              "ie": {
                "version_added": "9"
              },
              "opera": {
                "version_added": "10"
              },
              "opera_android": {
                "version_added": "14"
              },
              "safari": {
                "version_added": "5"
              },
              "safari_ios": {
                "version_added": "4.2"
              },
              "samsunginternet_android": {
                "version_added": "1.0"
              },
              "webview_android": {
                "version_added": "37"
              }
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        }
      }
    }
  }
}