{
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      "align-items": {
        "flex_context": {
          "__compat": {
            "description": "Supported in Flex Layout",
            "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/align-items",
            "support": {
              "chrome": [
                {
                  "version_added": "52"
                },
                {
                  "version_added": "29",
                  "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."
                },
                {
                  "prefix": "-webkit-",
                  "version_added": "21"
                }
              ],
              "chrome_android": [
                {
                  "version_added": "52"
                },
                {
                  "version_added": "29",
                  "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."
                },
                {
                  "prefix": "-webkit-",
                  "version_added": "21"
                }
              ],
              "edge": [
                {
                  "version_added": "12"
                },
                {
                  "prefix": "-webkit-",
                  "version_added": "12"
                }
              ],
              "edge_mobile": [
                {
                  "version_added": true
                },
                {
                  "prefix": "-webkit-",
                  "version_added": true
                }
              ],
              "firefox": [
                {
                  "version_added": "20",
                  "notes": "Multi-line flexbox has been supported since Firefox 28."
                },
                {
                  "prefix": "-webkit-",
                  "version_added": "49"
                },
                {
                  "version_removed": true,
                  "version_added": "18",
                  "flags": [
                    {
                      "type": "preference",
                      "name": "layout.css.flexbox.enabled",
                      "value_to_set": "true"
                    }
                  ]
                },
                {
                  "prefix": "-webkit-",
                  "version_added": "48",
                  "flags": [
                    {
                      "type": "preference",
                      "name": "layout.css.prefixes.webkit",
                      "value_to_set": "true"
                    }
                  ]
                }
              ],
              "firefox_android": [
                {
                  "version_added": "20",
                  "notes": "Multi-line flexbox has been supported since Firefox 28."
                },
                {
                  "prefix": "-webkit-",
                  "version_added": "49"
                },
                {
                  "version_removed": true,
                  "version_added": "18",
                  "flags": [
                    {
                      "type": "preference",
                      "name": "layout.css.flexbox.enabled",
                      "value_to_set": "true"
                    }
                  ]
                },
                {
                  "prefix": "-webkit-",
                  "version_added": "48",
                  "flags": [
                    {
                      "type": "preference",
                      "name": "layout.css.prefixes.webkit",
                      "value_to_set": "true"
                    }
                  ]
                }
              ],
              "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>."
              },
              "opera": {
                "version_added": "12.1"
              },
              "opera_android": {
                "version_added": "12.1"
              },
              "safari": {
                "prefix": "-webkit-",
                "version_added": "7"
              },
              "safari_ios": {
                "prefix": "-webkit-",
                "version_added": "7"
              },
              "samsunginternet_android": {
                "version_added": null
              },
              "webview_android": [
                {
                  "version_added": "52"
                },
                {
                  "version_added": "29",
                  "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."
                },
                {
                  "prefix": "-webkit-",
                  "version_added": "21"
                }
              ]
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          },
          "first_last_baseline": {
            "__compat": {
              "description": "<code>first baseline</code> and <code>last baseline</code>",
              "support": {
                "webview_android": {
                  "version_added": null
                },
                "chrome": {
                  "version_added": null
                },
                "chrome_android": {
                  "version_added": null
                },
                "edge": {
                  "version_added": null
                },
                "edge_mobile": {
                  "version_added": null
                },
                "firefox": {
                  "version_added": "45"
                },
                "firefox_android": {
                  "version_added": "45"
                },
                "ie": {
                  "version_added": null
                },
                "opera": {
                  "version_added": null
                },
                "opera_android": {
                  "version_added": null
                },
                "safari": {
                  "version_added": null
                },
                "safari_ios": {
                  "version_added": null
                },
                "samsunginternet_android": {
                  "version_added": null
                }
              },
              "status": {
                "experimental": false,
                "standard_track": true,
                "deprecated": false
              }
            }
          },
          "start_end": {
            "__compat": {
              "description": "<code>start</code> and <code>end</code>",
              "support": {
                "webview_android": {
                  "version_added": null
                },
                "chrome": {
                  "version_added": null
                },
                "chrome_android": {
                  "version_added": null
                },
                "edge": {
                  "version_added": null
                },
                "edge_mobile": {
                  "version_added": null
                },
                "firefox": {
                  "version_added": "45"
                },
                "firefox_android": {
                  "version_added": "45"
                },
                "ie": {
                  "version_added": null
                },
                "opera": {
                  "version_added": null
                },
                "opera_android": {
                  "version_added": null
                },
                "safari": {
                  "version_added": null
                },
                "safari_ios": {
                  "version_added": null
                },
                "samsunginternet_android": {
                  "version_added": null
                }
              },
              "status": {
                "experimental": false,
                "standard_track": true,
                "deprecated": false
              }
            }
          },
          "left_right": {
            "__compat": {
              "description": "<code>left</code> and <code>right</code>",
              "support": {
                "webview_android": {
                  "version_added": null
                },
                "chrome": {
                  "version_added": null
                },
                "chrome_android": {
                  "version_added": null
                },
                "edge": {
                  "version_added": null
                },
                "edge_mobile": {
                  "version_added": null
                },
                "firefox": {
                  "version_added": "45"
                },
                "firefox_android": {
                  "version_added": "45"
                },
                "ie": {
                  "version_added": null
                },
                "opera": {
                  "version_added": null
                },
                "opera_android": {
                  "version_added": null
                },
                "safari": {
                  "version_added": null
                },
                "safari_ios": {
                  "version_added": null
                },
                "samsunginternet_android": {
                  "version_added": null
                }
              },
              "status": {
                "experimental": false,
                "standard_track": true,
                "deprecated": false
              }
            }
          }
        },
        "grid_context": {
          "__compat": {
            "description": "Supported in Grid Layout",
            "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/align-items",
            "support": {
              "chrome": {
                "version_added": "57"
              },
              "chrome_android": {
                "version_added": "52"
              },
              "edge": {
                "version_added": "16"
              },
              "edge_mobile": {
                "version_added": true
              },
              "firefox": {
                "version_added": "52"
              },
              "firefox_android": {
                "version_added": "52"
              },
              "opera": {
                "version_added": "44"
              },
              "opera_android": {
                "version_added": "44"
              },
              "safari": {
                "version_added": "10.1"
              },
              "safari_ios": {
                "version_added": "10.3"
              },
              "samsunginternet_android": {
                "version_added": "6.2"
              },
              "webview_android": {
                "version_added": "57"
              }
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        }
      }
    }
  }
}