{
  "css": {
    "types": {
      "length": {
        "__compat": {
          "description": "<code>&lt;length&gt;</code>",
          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/length",
          "spec_url": "https://drafts.csswg.org/css-values/#lengths",
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "3"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "3.5"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": {
              "version_added": "≤37"
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "Q": {
          "__compat": {
            "description": "<code>Q</code> unit",
            "support": {
              "chrome": {
                "version_added": "63"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "49"
              },
              "firefox_android": "mirror",
              "ie": {
                "version_added": false
              },
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "13.1"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "cap": {
          "__compat": {
            "description": "<code>cap</code> unit",
            "tags": [
              "web-features:cap"
            ],
            "support": {
              "chrome": {
                "version_added": "117"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "97"
              },
              "firefox_android": "mirror",
              "ie": {
                "version_added": false
              },
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "17.2"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "ch": {
          "__compat": {
            "description": "<code>ch</code> unit",
            "support": {
              "chrome": {
                "version_added": "27"
              },
              "chrome_android": "mirror",
              "edge": {
                "version_added": "12"
              },
              "firefox": {
                "version_added": "1",
                "notes": [
                  "From Firefox 1 to Firefox 3, <code>ch</code> was the width of the <em>M</em> character.",
                  "From Firefox 1 to Firefox 3, <code>ch</code> did not work with <a href='https://developer.mozilla.org/docs/Web/CSS/border-width' ><code>border-width</code></a> and <a href='https://developer.mozilla.org/docs/Web/CSS/outline-width'><code>outline-width</code></a> CSS properties."
                ]
              },
              "firefox_android": {
                "version_added": "4"
              },
              "ie": {
                "version_added": "9"
              },
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "7"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "container_query_length_units": {
          "__compat": {
            "description": "Container query length units <code>cqw</code>, <code>cqh</code>, <code>cqi</code>, <code>cqb</code>, <code>cqmin</code>, <code>cqmax</code>",
            "tags": [
              "web-features:container-queries"
            ],
            "support": {
              "chrome": {
                "version_added": "105"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "110"
              },
              "firefox_android": "mirror",
              "ie": {
                "version_added": false
              },
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "16"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "em": {
          "__compat": {
            "description": "<code>em</code> unit",
            "support": {
              "chrome": {
                "version_added": "1"
              },
              "chrome_android": "mirror",
              "edge": {
                "version_added": "12"
              },
              "firefox": {
                "version_added": "1"
              },
              "firefox_android": "mirror",
              "ie": {
                "version_added": "3"
              },
              "oculus": "mirror",
              "opera": {
                "version_added": "3.5"
              },
              "opera_android": {
                "version_added": "10.1"
              },
              "safari": {
                "version_added": "1"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": {
                "version_added": "1"
              }
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "ex": {
          "__compat": {
            "description": "<code>ex</code> unit",
            "support": {
              "chrome": {
                "version_added": "1"
              },
              "chrome_android": "mirror",
              "edge": {
                "version_added": "12"
              },
              "firefox": {
                "version_added": "1"
              },
              "firefox_android": "mirror",
              "ie": {
                "version_added": "4"
              },
              "oculus": "mirror",
              "opera": {
                "version_added": "3.5"
              },
              "opera_android": {
                "version_added": "10.1"
              },
              "safari": {
                "version_added": "1"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "ic": {
          "__compat": {
            "description": "<code>ic</code> unit",
            "tags": [
              "web-features:ic"
            ],
            "support": {
              "chrome": {
                "version_added": "106"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "97"
              },
              "firefox_android": "mirror",
              "ie": {
                "version_added": false
              },
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "15.4"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "lh": {
          "__compat": {
            "description": "<code>lh</code> unit",
            "spec_url": "https://drafts.csswg.org/css-values/#lh",
            "tags": [
              "web-features:lh"
            ],
            "support": {
              "chrome": {
                "version_added": "109"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "120"
              },
              "firefox_android": "mirror",
              "ie": {
                "version_added": false
              },
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "16.4"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "rcap": {
          "__compat": {
            "description": "<code>rcap</code> unit",
            "spec_url": "https://drafts.csswg.org/css-values/#rcap",
            "support": {
              "chrome": {
                "version_added": "117"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": false
              },
              "firefox_android": "mirror",
              "ie": {
                "version_added": false
              },
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "17.2"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "rch": {
          "__compat": {
            "description": "<code>rch</code> unit",
            "spec_url": "https://drafts.csswg.org/css-values/#rch",
            "support": {
              "chrome": {
                "version_added": "111"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": false
              },
              "firefox_android": "mirror",
              "ie": {
                "version_added": false
              },
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "17.2"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "rem": {
          "__compat": {
            "description": "<code>rem</code> unit",
            "support": {
              "chrome": {
                "version_added": "4"
              },
              "chrome_android": "mirror",
              "edge": {
                "version_added": "12"
              },
              "firefox": {
                "version_added": "3.6"
              },
              "firefox_android": "mirror",
              "ie": {
                "version_added": "9"
              },
              "oculus": "mirror",
              "opera": {
                "version_added": "11.6"
              },
              "opera_android": {
                "version_added": "12"
              },
              "safari": {
                "version_added": "5"
              },
              "safari_ios": {
                "version_added": "4"
              },
              "samsunginternet_android": "mirror",
              "webview_android": {
                "version_added": "2"
              }
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "rex": {
          "__compat": {
            "description": "<code>rex</code> unit",
            "spec_url": "https://drafts.csswg.org/css-values/#rex",
            "support": {
              "chrome": {
                "version_added": "111"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": false
              },
              "firefox_android": "mirror",
              "ie": {
                "version_added": false
              },
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "17.2"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "ric": {
          "__compat": {
            "description": "<code>ric</code> unit",
            "spec_url": "https://drafts.csswg.org/css-values/#ric",
            "support": {
              "chrome": {
                "version_added": "111"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": false
              },
              "firefox_android": "mirror",
              "ie": {
                "version_added": false
              },
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "17.2"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "rlh": {
          "__compat": {
            "description": "<code>rlh</code> unit",
            "spec_url": "https://drafts.csswg.org/css-values/#rlh",
            "support": {
              "chrome": {
                "version_added": "111"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "120"
              },
              "firefox_android": "mirror",
              "ie": {
                "version_added": false
              },
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "16.4"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "vb": {
          "__compat": {
            "description": "<code>vb</code> unit",
            "tags": [
              "web-features:viewport-unit-variants"
            ],
            "support": {
              "chrome": {
                "version_added": "108"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "101"
              },
              "firefox_android": "mirror",
              "ie": {
                "version_added": false
              },
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "15.4"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "vh": {
          "__compat": {
            "description": "<code>vh</code> unit",
            "tags": [
              "web-features:viewport-units"
            ],
            "support": {
              "chrome": {
                "version_added": "20"
              },
              "chrome_android": "mirror",
              "edge": {
                "version_added": "12"
              },
              "firefox": {
                "version_added": "19",
                "notes": "Starting with version 21, viewport-percentage lengths are invalid in <code>@page</code>."
              },
              "firefox_android": "mirror",
              "ie": {
                "version_added": "9"
              },
              "oculus": "mirror",
              "opera": {
                "version_added": "20"
              },
              "opera_android": "mirror",
              "safari": {
                "version_added": "6"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "vi": {
          "__compat": {
            "description": "<code>vi</code> unit",
            "tags": [
              "web-features:viewport-unit-variants"
            ],
            "support": {
              "chrome": {
                "version_added": "108"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "101"
              },
              "firefox_android": "mirror",
              "ie": {
                "version_added": false
              },
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "15.4"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "viewport_percentage_units_dynamic": {
          "__compat": {
            "description": "<code>dvb</code>, <code>dvh</code>, <code>dvi</code>, <code>dvmax</code>, <code>dvmin</code>, <code>dvw</code> units",
            "tags": [
              "web-features:viewport-unit-variants"
            ],
            "support": {
              "chrome": {
                "version_added": "108"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "101"
              },
              "firefox_android": "mirror",
              "ie": {
                "version_added": false
              },
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "15.4"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "viewport_percentage_units_large": {
          "__compat": {
            "description": "<code>lvb</code>, <code>lvh</code>, <code>lvi</code>, <code>lvmax</code>, <code>lvmin</code>, <code>lvw</code> units",
            "tags": [
              "web-features:viewport-unit-variants"
            ],
            "support": {
              "chrome": {
                "version_added": "108"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "101"
              },
              "firefox_android": "mirror",
              "ie": {
                "version_added": false
              },
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "15.4"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "viewport_percentage_units_small": {
          "__compat": {
            "description": "<code>svb</code>, <code>svh</code>, <code>svi</code>, <code>svmax</code>, <code>svmin</code>, <code>svw</code> units",
            "tags": [
              "web-features:viewport-unit-variants"
            ],
            "support": {
              "chrome": {
                "version_added": "108"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "101"
              },
              "firefox_android": "mirror",
              "ie": {
                "version_added": false
              },
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "15.4"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "vmax": {
          "__compat": {
            "description": "<code>vmax</code> unit",
            "tags": [
              "web-features:viewport-units"
            ],
            "support": {
              "chrome": {
                "version_added": "26"
              },
              "chrome_android": "mirror",
              "edge": {
                "version_added": "16"
              },
              "firefox": {
                "version_added": "19",
                "notes": "Starting with version 21, viewport-percentage lengths are invalid in <code>@page</code>."
              },
              "firefox_android": "mirror",
              "ie": {
                "version_added": false
              },
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "7"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": {
                "version_added": "1.5"
              }
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "vmin": {
          "__compat": {
            "description": "<code>vmin</code> unit",
            "tags": [
              "web-features:viewport-units"
            ],
            "support": {
              "chrome": {
                "version_added": "26"
              },
              "chrome_android": "mirror",
              "edge": [
                {
                  "version_added": "12"
                },
                {
                  "alternative_name": "vm",
                  "version_added": "12"
                }
              ],
              "firefox": {
                "version_added": "19",
                "notes": "Starting with version 21, viewport-percentage lengths are invalid in <code>@page</code>."
              },
              "firefox_android": "mirror",
              "ie": [
                {
                  "version_added": "10"
                },
                {
                  "alternative_name": "vm",
                  "version_added": "9"
                }
              ],
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "7"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "vw": {
          "__compat": {
            "description": "<code>vw</code> unit",
            "tags": [
              "web-features:viewport-units"
            ],
            "support": {
              "chrome": {
                "version_added": "20"
              },
              "chrome_android": "mirror",
              "edge": {
                "version_added": "12"
              },
              "firefox": {
                "version_added": "19",
                "notes": "Starting with version 21, viewport-percentage lengths are invalid in <code>@page</code>."
              },
              "firefox_android": "mirror",
              "ie": {
                "version_added": "9"
              },
              "oculus": "mirror",
              "opera": {
                "version_added": "20"
              },
              "opera_android": "mirror",
              "safari": {
                "version_added": "6"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        }
      }
    }
  }
}