{
"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",
"webview_ios": "mirror"
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
},
"anchor-center": {
"__compat": {
"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,
"impl_url": "https://bugzil.la/1838746"
},
"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",
"webview_ios": "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 align-items: center;
set on them and their content is too large, then they will overflow the bounds of their container. See Flexbug #2."
},
"oculus": "mirror",
"opera": "mirror",
"opera_android": "mirror",
"safari": {
"version_added": "7"
},
"safari_ios": "mirror",
"samsunginternet_android": "mirror",
"webview_android": "mirror",
"webview_ios": "mirror"
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
},
"baseline": {
"__compat": {
"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"
},
"webview_ios": "mirror"
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
},
"first_baseline": {
"__compat": {
"description": "first baseline
",
"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",
"webview_ios": "mirror"
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
},
"last_baseline": {
"__compat": {
"description": "last baseline
",
"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",
"webview_ios": "mirror"
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
},
"safe_unsafe": {
"__compat": {
"description": "safe
and unsafe
",
"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": "17.6"
},
"safari_ios": "mirror",
"samsunginternet_android": "mirror",
"webview_android": "mirror",
"webview_ios": "mirror"
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
},
"start_end": {
"__compat": {
"description": "start
and end
",
"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",
"webview_ios": "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"
},
"webview_ios": "mirror"
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
},
"start_end": {
"__compat": {
"description": "start
and end
",
"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",
"webview_ios": "mirror"
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
}
}
}
}
}
}