{
  "css": {
    "properties": {
      "align-items": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/align-items",
          "spec_url": [
            "https://drafts.csswg.org/css-align/#align-items-property",
            "https://drafts.csswg.org/css-flexbox/#align-items-property"
          ],
          "support": {
            "chrome": [
              {
                "version_added": "29"
              },
              {
                "prefix": "-webkit-",
                "version_added": "21"
              }
            ],
            "chrome_android": "mirror",
            "edge": [
              {
                "version_added": "12"
              },
              {
                "prefix": "-webkit-",
                "version_added": "12"
              }
            ],
            "firefox": [
              {
                "version_added": "20"
              },
              {
                "prefix": "-webkit-",
                "version_added": "49"
              }
            ],
            "firefox_android": "mirror",
            "ie": {
              "version_added": "11"
            },
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": [
              {
                "version_added": "9"
              },
              {
                "prefix": "-webkit-",
                "version_added": "7"
              }
            ],
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "anchor-center": {
          "__compat": {
            "description": "<code>anchor-center</code>",
            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#anchor-center",
            "tags": [
              "web-features:anchor-positioning"
            ],
            "support": {
              "chrome": {
                "version_added": "125"
              },
              "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": false
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror"
            },
            "status": {
              "experimental": true,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "flex_context": {
          "__compat": {
            "description": "Supported in Flex Layout",
            "spec_url": [
              "https://drafts.csswg.org/css-align/#align-items-property",
              "https://drafts.csswg.org/css-flexbox/#align-items-property"
            ],
            "tags": [
              "web-features:flexbox"
            ],
            "support": {
              "chrome": [
                {
                  "version_added": "52"
                },
                {
                  "version_added": "21",
                  "version_removed": "52",
                  "partial_implementation": true,
                  "notes": "Older versions of the specification treat absolute positioned children as though they are a 0 by 0 flex item. Later specification versions take the children out of the flow and set their positions based on align and justify properties. Chrome implements the new behavior beginning with Chrome 52."
                }
              ],
              "chrome_android": "mirror",
              "edge": {
                "version_added": "12"
              },
              "firefox": {
                "version_added": "20",
                "notes": "Multi-line flexbox has been supported since Firefox 28."
              },
              "firefox_android": "mirror",
              "ie": {
                "version_added": "11",
                "notes": "In Internet Explorer 10 and 11, if column flex items have <code>align-items: center;</code> set on them and their content is too large, then they will overflow the bounds of their container. See <a href='https://github.com/philipwalton/flexbugs#2-column-flex-items-set-to-align-itemscenter-overflow-their-container'>Flexbug #2</a>."
              },
              "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
            }
          },
          "baseline": {
            "__compat": {
              "description": "<code>baseline</code>",
              "tags": [
                "web-features:flexbox"
              ],
              "support": {
                "chrome": {
                  "version_added": "21"
                },
                "chrome_android": "mirror",
                "edge": {
                  "version_added": "≤79"
                },
                "firefox": {
                  "version_added": "28"
                },
                "firefox_android": "mirror",
                "ie": {
                  "version_added": false
                },
                "oculus": "mirror",
                "opera": {
                  "version_added": "44"
                },
                "opera_android": {
                  "version_added": "43"
                },
                "safari": {
                  "version_added": "7"
                },
                "safari_ios": "mirror",
                "samsunginternet_android": {
                  "version_added": "7.0"
                },
                "webview_android": {
                  "version_added": "57"
                }
              },
              "status": {
                "experimental": false,
                "standard_track": true,
                "deprecated": false
              }
            }
          },
          "first_baseline": {
            "__compat": {
              "description": "<code>first baseline</code>",
              "support": {
                "chrome": {
                  "version_added": "59"
                },
                "chrome_android": "mirror",
                "edge": {
                  "version_added": "≤79"
                },
                "firefox": {
                  "version_added": "52"
                },
                "firefox_android": "mirror",
                "ie": {
                  "version_added": false
                },
                "oculus": "mirror",
                "opera": "mirror",
                "opera_android": "mirror",
                "safari": {
                  "version_added": "11"
                },
                "safari_ios": "mirror",
                "samsunginternet_android": "mirror",
                "webview_android": "mirror"
              },
              "status": {
                "experimental": false,
                "standard_track": true,
                "deprecated": false
              }
            }
          },
          "last_baseline": {
            "__compat": {
              "description": "<code>last baseline</code>",
              "support": {
                "chrome": {
                  "version_added": "108"
                },
                "chrome_android": "mirror",
                "edge": "mirror",
                "firefox": {
                  "version_added": "52"
                },
                "firefox_android": "mirror",
                "ie": {
                  "version_added": false
                },
                "oculus": "mirror",
                "opera": "mirror",
                "opera_android": "mirror",
                "safari": {
                  "version_added": "16.2"
                },
                "safari_ios": "mirror",
                "samsunginternet_android": "mirror",
                "webview_android": "mirror"
              },
              "status": {
                "experimental": false,
                "standard_track": true,
                "deprecated": false
              }
            }
          },
          "safe_unsafe": {
            "__compat": {
              "description": "<code>safe</code> and <code>unsafe</code>",
              "support": {
                "chrome": {
                  "version_added": "115",
                  "notes": "Before version 115, this value is recognized, but has no effect."
                },
                "chrome_android": "mirror",
                "edge": "mirror",
                "firefox": {
                  "version_added": "63"
                },
                "firefox_android": "mirror",
                "ie": {
                  "version_added": false
                },
                "oculus": "mirror",
                "opera": "mirror",
                "opera_android": "mirror",
                "safari": {
                  "version_added": false,
                  "notes": "This value is recognized, but has no effect."
                },
                "safari_ios": "mirror",
                "samsunginternet_android": "mirror",
                "webview_android": "mirror"
              },
              "status": {
                "experimental": false,
                "standard_track": true,
                "deprecated": false
              }
            }
          },
          "start_end": {
            "__compat": {
              "description": "<code>start</code> and <code>end</code>",
              "support": {
                "chrome": {
                  "version_added": "93"
                },
                "chrome_android": "mirror",
                "edge": "mirror",
                "firefox": {
                  "version_added": "45"
                },
                "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
              }
            }
          }
        },
        "grid_context": {
          "__compat": {
            "description": "Supported in Grid Layout",
            "spec_url": [
              "https://drafts.csswg.org/css-align/#align-items-property",
              "https://drafts.csswg.org/css-flexbox/#align-items-property"
            ],
            "tags": [
              "web-features:grid"
            ],
            "support": {
              "chrome": {
                "version_added": "57"
              },
              "chrome_android": {
                "version_added": "52"
              },
              "edge": {
                "version_added": "16"
              },
              "firefox": {
                "version_added": "52"
              },
              "firefox_android": "mirror",
              "ie": {
                "version_added": false
              },
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": {
                "version_added": "43"
              },
              "safari": {
                "version_added": "10.1"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": {
                "version_added": "6.2"
              },
              "webview_android": {
                "version_added": "57"
              }
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          },
          "start_end": {
            "__compat": {
              "description": "<code>start</code> and <code>end</code>",
              "tags": [
                "web-features:grid"
              ],
              "support": {
                "chrome": {
                  "version_added": "57"
                },
                "chrome_android": "mirror",
                "edge": "mirror",
                "firefox": {
                  "version_added": "52"
                },
                "firefox_android": "mirror",
                "ie": {
                  "version_added": false
                },
                "oculus": "mirror",
                "opera": "mirror",
                "opera_android": "mirror",
                "safari": {
                  "version_added": "11"
                },
                "safari_ios": "mirror",
                "samsunginternet_android": "mirror",
                "webview_android": "mirror"
              },
              "status": {
                "experimental": false,
                "standard_track": true,
                "deprecated": false
              }
            }
          }
        }
      }
    }
  }
}