{
  "css": {
    "at-rules": {
      "viewport": {
        "__compat": {
          "description": "<code>@viewport</code>",
          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@viewport",
          "support": {
            "chrome": {
              "version_removed": "84",
              "version_added": "29",
              "flags": [
                {
                  "type": "runtime_flag",
                  "name": "--enable-experimental-webkit-features"
                },
                {
                  "type": "runtime_flag",
                  "name": "--enable-viewport"
                }
              ],
              "notes": "See Chromium <a href='https://crbug.com/235457'>bug 235457</a>."
            },
            "chrome_android": {
              "version_removed": "84",
              "version_added": "29",
              "flags": [
                {
                  "type": "runtime_flag",
                  "name": "--enable-experimental-webkit-features"
                },
                {
                  "type": "runtime_flag",
                  "name": "--enable-viewport"
                }
              ],
              "notes": "See Chromium <a href='https://crbug.com/235457'>bug 235457</a>."
            },
            "edge": {
              "prefix": "-ms-",
              "version_added": "12",
              "flags": [
                {
                  "type": "preference",
                  "name": "Enable @-ms-viewport rules"
                }
              ]
            },
            "firefox": {
              "version_added": false,
              "notes": "See Firefox <a href='https://bugzil.la/747754'>bug 747754</a>."
            },
            "firefox_android": {
              "version_added": false,
              "notes": "See Firefox <a href='https://bugzil.la/747754'>bug 747754</a>."
            },
            "ie": {
              "prefix": "-ms-",
              "version_added": "10"
            },
            "opera": [
              {
                "version_added": "16",
                "flags": [
                  {
                    "type": "runtime_flag",
                    "name": "--enable-experimental-webkit-features"
                  },
                  {
                    "type": "runtime_flag",
                    "name": "--enable-viewport"
                  }
                ]
              },
              {
                "prefix": "-o-",
                "version_added": "11.1",
                "version_removed": "15"
              }
            ],
            "opera_android": [
              {
                "version_added": "16",
                "flags": [
                  {
                    "type": "runtime_flag",
                    "name": "--enable-experimental-webkit-features"
                  },
                  {
                    "type": "runtime_flag",
                    "name": "--enable-viewport"
                  }
                ]
              },
              {
                "prefix": "-o-",
                "version_added": "11.1",
                "version_removed": "14"
              }
            ],
            "safari": {
              "version_added": false,
              "notes": "See WebKit <a href='https://webkit.org/b/95959'>bug 95959</a>."
            },
            "safari_ios": {
              "version_added": false,
              "notes": "See WebKit <a href='https://webkit.org/b/95959'>bug 95959</a>."
            },
            "samsunginternet_android": {
              "version_added": "2.0"
            },
            "webview_android": {
              "version_removed": "37",
              "version_added": "4.4"
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "height": {
          "__compat": {
            "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@viewport/height",
            "description": "<code>height</code> descriptor",
            "support": {
              "chrome": {
                "version_removed": "84",
                "version_added": "29"
              },
              "chrome_android": {
                "version_removed": "84",
                "version_added": "29"
              },
              "edge": {
                "prefix": "-ms-",
                "version_added": "12"
              },
              "firefox": {
                "version_added": false
              },
              "firefox_android": {
                "version_added": false
              },
              "ie": {
                "prefix": "-ms-",
                "version_added": "10"
              },
              "opera": [
                {
                  "version_added": "16"
                },
                {
                  "version_added": "11.1",
                  "version_removed": "15"
                }
              ],
              "opera_android": [
                {
                  "version_added": "16"
                },
                {
                  "version_added": "11.1",
                  "version_removed": "14"
                }
              ],
              "safari": {
                "version_added": false
              },
              "safari_ios": {
                "version_added": false
              },
              "samsunginternet_android": {
                "version_added": "2.0"
              },
              "webview_android": {
                "version_removed": "37",
                "version_added": "4.4"
              }
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "max-height": {
          "__compat": {
            "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@viewport/max-height",
            "description": "<code>max-height</code> descriptor",
            "support": {
              "chrome": {
                "version_removed": "84",
                "version_added": "29"
              },
              "chrome_android": {
                "version_removed": "84",
                "version_added": "29"
              },
              "edge": {
                "prefix": "-ms-",
                "version_added": "12"
              },
              "firefox": {
                "version_added": false
              },
              "firefox_android": {
                "version_added": false
              },
              "ie": {
                "prefix": "-ms-",
                "version_added": "10"
              },
              "opera": [
                {
                  "version_added": "16"
                },
                {
                  "version_added": "11.1",
                  "version_removed": "15"
                }
              ],
              "opera_android": [
                {
                  "version_added": "16"
                },
                {
                  "version_added": "11.1",
                  "version_removed": "14"
                }
              ],
              "safari": {
                "version_added": false
              },
              "safari_ios": {
                "version_added": false
              },
              "samsunginternet_android": {
                "version_added": "2.0"
              },
              "webview_android": {
                "version_removed": "37",
                "version_added": "4.4"
              }
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "max-width": {
          "__compat": {
            "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@viewport/max-width",
            "description": "<code>max-width</code> descriptor",
            "support": {
              "chrome": {
                "version_removed": "84",
                "version_added": "29"
              },
              "chrome_android": {
                "version_removed": "84",
                "version_added": "29"
              },
              "edge": {
                "prefix": "-ms-",
                "version_added": "12"
              },
              "firefox": {
                "version_added": false
              },
              "firefox_android": {
                "version_added": false
              },
              "ie": {
                "prefix": "-ms-",
                "version_added": "10"
              },
              "opera": [
                {
                  "version_added": "16"
                },
                {
                  "version_added": "11.1",
                  "version_removed": "15"
                }
              ],
              "opera_android": [
                {
                  "version_added": "16"
                },
                {
                  "version_added": "11.1",
                  "version_removed": "14"
                }
              ],
              "safari": {
                "version_added": false
              },
              "safari_ios": {
                "version_added": false
              },
              "samsunginternet_android": {
                "version_added": "2.0"
              },
              "webview_android": {
                "version_removed": "37",
                "version_added": "4.4"
              }
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "max-zoom": {
          "__compat": {
            "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@viewport/max-zoom",
            "description": "<code>max-zoom</code> descriptor",
            "support": {
              "chrome": {
                "version_removed": "84",
                "version_added": "29"
              },
              "chrome_android": {
                "version_removed": "84",
                "version_added": "29"
              },
              "edge": {
                "prefix": "-ms-",
                "version_added": "12"
              },
              "firefox": {
                "version_added": false
              },
              "firefox_android": {
                "version_added": false
              },
              "ie": {
                "prefix": "-ms-",
                "version_added": "10"
              },
              "opera": {
                "version_added": "16"
              },
              "opera_android": {
                "version_added": "16"
              },
              "safari": {
                "version_added": false
              },
              "safari_ios": {
                "version_added": false
              },
              "samsunginternet_android": {
                "version_added": "2.0"
              },
              "webview_android": {
                "version_added": false
              }
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "min-height": {
          "__compat": {
            "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@viewport/min-height",
            "description": "<code>min-height</code> descriptor",
            "support": {
              "chrome": {
                "version_removed": "84",
                "version_added": "29"
              },
              "chrome_android": {
                "version_removed": "84",
                "version_added": "29"
              },
              "edge": {
                "prefix": "-ms-",
                "version_added": "12"
              },
              "firefox": {
                "version_added": false
              },
              "firefox_android": {
                "version_added": false
              },
              "ie": {
                "prefix": "-ms-",
                "version_added": "10"
              },
              "opera": [
                {
                  "version_added": "16"
                },
                {
                  "version_added": "11.1",
                  "version_removed": "15"
                }
              ],
              "opera_android": [
                {
                  "version_added": "16"
                },
                {
                  "version_added": "11.1",
                  "version_removed": "14"
                }
              ],
              "safari": {
                "version_added": false
              },
              "safari_ios": {
                "version_added": false
              },
              "samsunginternet_android": {
                "version_added": "2.0"
              },
              "webview_android": {
                "version_removed": "37",
                "version_added": "4.4"
              }
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "min-width": {
          "__compat": {
            "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@viewport/min-width",
            "description": "<code>min-width</code> descriptor",
            "support": {
              "chrome": {
                "version_removed": "84",
                "version_added": "29"
              },
              "chrome_android": {
                "version_removed": "84",
                "version_added": "29"
              },
              "edge": {
                "prefix": "-ms-",
                "version_added": "12"
              },
              "firefox": {
                "version_added": false
              },
              "firefox_android": {
                "version_added": false
              },
              "ie": {
                "prefix": "-ms-",
                "version_added": "10"
              },
              "opera": [
                {
                  "version_added": "16"
                },
                {
                  "version_added": "11.1",
                  "version_removed": "15"
                }
              ],
              "opera_android": [
                {
                  "version_added": "16"
                },
                {
                  "version_added": "11.1",
                  "version_removed": "14"
                }
              ],
              "safari": {
                "version_added": false
              },
              "safari_ios": {
                "version_added": false
              },
              "samsunginternet_android": {
                "version_added": "2.0"
              },
              "webview_android": {
                "version_removed": "37",
                "version_added": "4.4"
              }
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "min-zoom": {
          "__compat": {
            "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@viewport/min-zoom",
            "description": "<code>min-zoom</code> descriptor",
            "support": {
              "chrome": {
                "version_removed": "84",
                "version_added": "29"
              },
              "chrome_android": {
                "version_removed": "84",
                "version_added": "29"
              },
              "edge": {
                "prefix": "-ms-",
                "version_added": "12"
              },
              "firefox": {
                "version_added": false
              },
              "firefox_android": {
                "version_added": false
              },
              "ie": {
                "prefix": "-ms-",
                "version_added": "10"
              },
              "opera": {
                "version_added": "16"
              },
              "opera_android": {
                "version_added": "16"
              },
              "safari": {
                "version_added": false
              },
              "safari_ios": {
                "version_added": false
              },
              "samsunginternet_android": {
                "version_added": "2.0"
              },
              "webview_android": {
                "version_added": false
              }
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "orientation": {
          "__compat": {
            "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@viewport/orientation",
            "description": "<code>orientation</code> descriptor",
            "support": {
              "chrome": {
                "version_added": false
              },
              "chrome_android": {
                "version_added": false
              },
              "edge": {
                "prefix": "-ms-",
                "version_added": "12",
                "version_removed": "79"
              },
              "firefox": {
                "version_added": false
              },
              "firefox_android": {
                "version_added": false
              },
              "ie": {
                "prefix": "-ms-",
                "version_added": "10"
              },
              "opera": {
                "version_added": false
              },
              "opera_android": {
                "version_added": "11.1",
                "version_removed": "14",
                "prefix": "-o-"
              },
              "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
            }
          }
        },
        "user-zoom": {
          "__compat": {
            "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@viewport/user-zoom",
            "description": "<code>user-zoom</code> descriptor",
            "support": {
              "chrome": {
                "version_removed": "84",
                "version_added": "29"
              },
              "chrome_android": {
                "version_removed": "84",
                "version_added": "29"
              },
              "edge": {
                "prefix": "-ms-",
                "version_added": "12"
              },
              "firefox": {
                "version_added": false
              },
              "firefox_android": {
                "version_added": false
              },
              "ie": {
                "prefix": "-ms-",
                "version_added": "10"
              },
              "opera": {
                "version_added": "16"
              },
              "opera_android": {
                "version_added": "16"
              },
              "safari": {
                "version_added": false
              },
              "safari_ios": {
                "version_added": false
              },
              "samsunginternet_android": {
                "version_added": "2.0"
              },
              "webview_android": {
                "version_added": false
              }
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "viewport-fit": {
          "__compat": {
            "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@viewport/viewport-fit",
            "description": "<code>viewport-fit</code> descriptor",
            "support": {
              "chrome": {
                "version_added": false
              },
              "chrome_android": {
                "version_added": false
              },
              "edge": {
                "version_added": false
              },
              "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": false
              },
              "webview_android": {
                "version_added": false
              }
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "width": {
          "__compat": {
            "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@viewport/width",
            "description": "<code>width</code> descriptor",
            "support": {
              "chrome": {
                "version_removed": "84",
                "version_added": "29"
              },
              "chrome_android": {
                "version_removed": "84",
                "version_added": "29"
              },
              "edge": {
                "prefix": "-ms-",
                "version_added": "12"
              },
              "firefox": {
                "version_added": false
              },
              "firefox_android": {
                "version_added": false
              },
              "ie": {
                "prefix": "-ms-",
                "version_added": "10"
              },
              "opera": [
                {
                  "version_added": "16"
                },
                {
                  "version_added": "11.1",
                  "version_removed": "15"
                }
              ],
              "opera_android": [
                {
                  "version_added": "16"
                },
                {
                  "version_added": "11.1",
                  "version_removed": "14"
                }
              ],
              "safari": {
                "version_added": false
              },
              "safari_ios": {
                "version_added": false
              },
              "samsunginternet_android": {
                "version_added": "2.0"
              },
              "webview_android": {
                "version_removed": "37",
                "version_added": "4.4"
              }
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "zoom": {
          "__compat": {
            "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@viewport/zoom",
            "description": "<code>zoom</code> descriptor",
            "support": {
              "chrome": {
                "version_removed": "84",
                "version_added": "29"
              },
              "chrome_android": {
                "version_removed": "84",
                "version_added": "61"
              },
              "edge": {
                "prefix": "-ms-",
                "version_added": "12"
              },
              "firefox": {
                "version_added": false
              },
              "firefox_android": {
                "version_added": false
              },
              "ie": {
                "prefix": "-ms-",
                "version_added": "10"
              },
              "opera": {
                "version_added": "16"
              },
              "opera_android": {
                "version_added": "16"
              },
              "safari": {
                "version_added": false
              },
              "safari_ios": {
                "version_added": false
              },
              "samsunginternet_android": {
                "version_added": "8.0"
              },
              "webview_android": {
                "version_removed": "37",
                "version_added": "4.4"
              }
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        }
      }
    }
  }
}