{
  "css": {
    "properties": {
      "border-radius": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/Reference/Properties/border-radius",
          "spec_url": "https://drafts.csswg.org/css-backgrounds/#border-radius",
          "tags": [
            "web-features:border-radius"
          ],
          "support": {
            "chrome": [
              {
                "version_added": "4",
                "notes": "Chrome ignores `border-radius` on `<select>` elements unless `-webkit-appearance` is overridden to an appropriate value."
              },
              {
                "prefix": "-webkit-",
                "version_added": "1"
              }
            ],
            "chrome_android": {
              "version_added": "18"
            },
            "edge": [
              {
                "version_added": "12"
              },
              {
                "prefix": "-webkit-",
                "version_added": "12"
              }
            ],
            "firefox": [
              {
                "version_added": "4",
                "notes": [
                  "Before Firefox 50, border styles of rounded corners (with `border-radius`) were always rendered as if `border-style` was `solid`. This has been fixed in Firefox 50.",
                  "To conform to the CSS3 standard, Firefox 4 changes the handling of [`<percentage>`](https://developer.mozilla.org/docs/Web/CSS/percentage) values to match the specification. You can specify an ellipse as a border on an arbitrary sized element with `border-radius: 50%;`. Firefox 4 also makes rounded corners clip content and images if [`overflow`](https://developer.mozilla.org/docs/Web/CSS/overflow)`: visible` is not set."
                ]
              },
              {
                "prefix": "-moz-",
                "version_added": "1",
                "version_removed": "12"
              }
            ],
            "firefox_android": [
              {
                "version_added": "4",
                "notes": "Before Firefox 50, border styles of rounded corners (with `border-radius`) were always rendered as if `border-style` was `solid`. This has been fixed in Firefox 50."
              },
              {
                "prefix": "-moz-",
                "version_added": "4",
                "version_removed": "14"
              }
            ],
            "ie": {
              "version_added": "9"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "10.5",
              "notes": "Before Opera 11.60, replaced elements with `border-radius` do not have rounded corners."
            },
            "opera_android": {
              "version_added": "11"
            },
            "safari": [
              {
                "version_added": "5",
                "notes": "Safari ignores `border-radius` on `<select>` elements unless `-webkit-appearance` is overridden to an appropriate value."
              },
              {
                "prefix": "-webkit-",
                "version_added": "3"
              }
            ],
            "safari_ios": [
              {
                "version_added": "4.2",
                "notes": "Safari ignores `border-radius` on `<select>` elements unless `-webkit-appearance` is overridden to an appropriate value."
              },
              {
                "prefix": "-webkit-",
                "version_added": "1"
              }
            ],
            "samsunginternet_android": "mirror",
            "webview_android": [
              {
                "version_added": "≤4.4"
              },
              {
                "prefix": "-webkit-",
                "version_added": "2"
              }
            ],
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "elliptical_borders": {
          "__compat": {
            "description": "Elliptical borders",
            "tags": [
              "web-features:border-radius"
            ],
            "support": {
              "chrome": {
                "version_added": "1",
                "notes": "Before Chrome 4, the slash `/` notation is unsupported. If two values are specified, then an elliptical border is drawn on all four corners. `-webkit-border-radius: 40px 10px;` is equivalent to `border-radius: 40px / 10px;`."
              },
              "chrome_android": {
                "version_added": "18"
              },
              "edge": {
                "version_added": "12"
              },
              "firefox": {
                "version_added": "4"
              },
              "firefox_android": "mirror",
              "ie": {
                "version_added": "9"
              },
              "oculus": "mirror",
              "opera": {
                "version_added": "10.5"
              },
              "opera_android": {
                "version_added": "11"
              },
              "safari": {
                "version_added": "3",
                "notes": "Before Safari 5, the slash `/` notation is unsupported. If two values are specified, then an elliptical border is drawn on all four corners. `-webkit-border-radius: 40px 10px;` is equivalent to `border-radius: 40px / 10px;`."
              },
              "safari_ios": {
                "version_added": "4.2"
              },
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "percentages": {
          "__compat": {
            "description": "Percentages",
            "tags": [
              "web-features:border-radius"
            ],
            "support": {
              "chrome": {
                "version_added": "8"
              },
              "chrome_android": "mirror",
              "edge": {
                "version_added": "12"
              },
              "firefox": {
                "version_added": "4",
                "notes": "Before Firefox 4, `<percentage>` values are implemented in a non-standard way. Both horizontal and vertical radii were relative to the width of the border box."
              },
              "firefox_android": {
                "version_added": "4"
              },
              "ie": {
                "version_added": "9"
              },
              "oculus": "mirror",
              "opera": {
                "version_added": "11.5",
                "notes": "Before Opera 11.5, the implementation of `<percentage>` values was buggy."
              },
              "opera_android": {
                "version_added": "11.5"
              },
              "safari": {
                "version_added": "5.1"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "4_values_for_4_corners": {
          "__compat": {
            "description": "4 values for 4 corners",
            "tags": [
              "web-features:border-radius"
            ],
            "support": {
              "chrome": {
                "version_added": "4"
              },
              "chrome_android": "mirror",
              "edge": {
                "version_added": "12"
              },
              "firefox": {
                "version_added": "4"
              },
              "firefox_android": "mirror",
              "ie": {
                "version_added": "9"
              },
              "oculus": "mirror",
              "opera": {
                "version_added": "10.5"
              },
              "opera_android": {
                "version_added": "11"
              },
              "safari": {
                "version_added": "5"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        }
      }
    }
  }
}