Property ↓	CSS 1	CSS 2	CSS 2.1/2.2	CSS 3/CSS	Initial Value
Property	CSS 1	CSS 2	CSS 2.1/2.2	CSS 3/CSS	Initial Value
`align-content`					`auto`
`align-items`					`auto`
`align-self`					`auto`
`alignment-baseline`					`baseline`
`all`					depending on individual properties
`animation`					depending on individual properties
`animation-delay`					`0`
`animation-direction`					`normal`
`animation-duration`					`0`
`animation-fill-mode`					`none`
`animation-iteration-count`					`1`
`animation-name`					`none`
`animation-play-state`					`running`
`animation-timing-function`					`ease`
`azimuth`					`center`
`backface-visibility`					`visible`
`background`					depending on individual properties
`background-attachment`					`scroll`
`background-clip`					`border-box`
`background-color`					`transparent`
`background-image`					`none`
`background-origin`					`padding-box`
`background-position`					`0% 0%`
`background-repeat`					`repeat`
`background-size`					`auto`
`baseline-shift`					`0`
`binding`					`none`
`bleed`					`6pt`
`bookmark-label`					`content()`
`bookmark-level`					`none`
`bookmark-state`					`open`
`border`					depending on individual properties
`border-bottom`					depending on individual properties
`border-bottom-color`					`currentColor`
`border-bottom-left-radius`					`0`
`border-bottom-right-radius`					`0`
`border-bottom-style`					`none`
`border-bottom-width`					`medium`
`border-boundary`					`none`
`border-collapse`					`separate`
`border-color`					depending on individual properties
`border-image`					`none`
`border-image-outset`					`0`
`border-image-repeat`					`stretch`
`border-image-slice`					`100%`
`border-image-source`					`none`
`border-image-width`					`1`
`border-left`					depending on individual properties
`border-left-color`					`currentColor`
`border-left-style`					`none`
`border-left-width`					`medium`
`border-radius`					`0`
`border-right`					depending on individual properties
`border-right-color`					`currentColor`
`border-right-style`					`none`
`border-right-width`					`medium`
`border-spacing`					`0px 0px`
`border-style`					depending on individual properties
`border-top`					depending on individual properties
`border-top-color`					`currentColor`
`border-top-left-radius`					`0`
`border-top-right-radius`					`0`
`border-top-style`					`none`
`border-top-width`					`medium`
`border-width`					depending on individual properties
`bottom`					`auto`
`box-decoration-break`					`slice`
`box-shadow`					`none`
`box-sizing`					`content-box`
`box-snap`					`none`
`box-suppress`					`show`
`break-after`					`auto`
`break-before`					`auto`
`break-inside`					`auto`
`caption-side`					`top`
`chains`					`none`
`clear`					`none`
`clip`					`auto`
`clip-path`					`none`
`clip-rule`					`nonzero`
`color`					implementation dependent
`color-interpolation-filters`					`auto`
`column-count`					`auto`
`column-fill`					`balance`
`column-gap`					`normal`
`column-rule`					depending on individual properties
`column-rule-color`					implementation dependent
`column-rule-style`					`medium`
`column-rule-width`					`medium`
`column-span`					`none`
`column-width`					`auto`
`columns`					depending on individual properties
`contain`					`none`
`content`					`normal`
`counter-increment`					`none`
`counter-reset`					`none`
`counter-set`					`none`
`crop`					`auto`
`cue`					depending on individual properties
`cue-after`					`none`
`cue-before`					`none`
`cursor`					`auto`
`direction`					`ltr`
`display`					depending on individual properties
`display-inside`					`auto`
`display-list`					`none`
`display-outside`					`inline-level`
`dominant-baseline`					`normal`
`elevation`					`level`
`empty-cells`					`show`
`filter`					`none`
`flex`					depending on individual properties
`flex-basis`					`auto`
`flex-direction`					`row`
`flex-flow`					depending on individual properties
`flex-grow`					`0`
`flex-shrink`					`1`
`flex-wrap`					`nowrap`
`float`					`none`
`float-offset`					`0 0`
`flood-color`					`black`
`flood-opacity`					`1`
`flow-from`					`none`
`flow-into`					`none`
`font`					depending on individual properties
`font-family`					implementation dependent
`font-feature-settings`					`normal`
`font-kerning`					`auto`
`font-language-override`					`normal`
`font-size`					`medium`
`font-size-adjust`					`none`
`font-stretch`					`normal`
`font-style`					`normal`
`font-synthesis`					`weight style`
`font-variant`					`normal`
`font-variant-alternates`					`normal`
`font-variant-caps`					`normal`
`font-variant-east-asian`					`normal`
`font-variant-ligatures`					`normal`
`font-variant-numeric`					`normal`
`font-variant-position`					`normal`
`font-weight`					`normal`
`grid`					depending on individual properties
`grid-area`					depending on individual properties
`grid-auto-columns`					`auto`
`grid-auto-flow`					`none`
`grid-auto-rows`					`auto`
`grid-column`					depending on individual properties
`grid-column-end`					`auto`
`grid-column-start`					`auto`
`grid-row`					depending on individual properties
`grid-row-end`					`auto`
`grid-row-start`					`auto`
`grid-template`					depending on individual properties
`grid-template-areas`					`none`
`grid-template-columns`					`none`
`grid-template-rows`					`none`
`hanging-punctuation`					`none`
`height`					`auto`
`hyphens`					`manual`
`icon`					`auto`
`image-orientation`					`0deg`
`image-rendering`					`auto`
`image-resolution`					`1dppx`
`ime-mode`					`auto`
`initial-letter`					`normal`
`justify-content`					`auto`
`justify-items`					`auto`
`justify-self`					`auto`
`left`					`auto`
`letter-spacing`					`normal`
`lighting-color`					`white`
`line-break`					`auto`
`line-grid`					`match-parent`
`line-height`					`normal`
`line-snap`					`none`
`list-style`					depending on individual properties
`list-style-image`					`none`
`list-style-position`					`outside`
`list-style-type`					`disc`
`margin`					depending on individual properties
`margin-bottom`					`0`
`margin-left`					`0`
`margin-right`					`0`
`margin-top`					`0`
`marker-offset`					`auto`
`marker-side`					`list-item`
`marks`					`none`
`mask`					`border-box`
`mask-box`					see individual properties
`mask-box-outset`					`0`
`mask-box-repeat`					`stretch`
`mask-box-slice`					`0 fill`
`mask-box-source`					`none`
`mask-box-width`					`auto`
`mask-clip`					`border-box`
`mask-image`					`none`
`mask-origin`					`border-box`
`mask-position`					`center`
`mask-repeat`					`no-repeat`
`mask-size`					`border-box`
`mask-source-type`					`auto`
`mask-type`					`luminance`
`max-height`					`none`
`max-lines`					`none`
`max-width`					`none`
`min-height`					`auto`
`min-width`					`auto`
`move-to`					`normal`
`nav-down`					`auto`
`nav-index`					`auto`
`nav-left`					`auto`
`nav-right`					`auto`
`nav-up`					`auto`
`object-fit`					`fill`
`object-position`					`50% 50%`
`opacity`					`1`
`order`					`0`
`orphans`					`2`
`outline`					depending on individual properties
`outline-color`					`invert`
`outline-offset`					`0`
`outline-style`					`none`
`outline-width`					`medium`
`overflow`					depending on individual properties
`overflow-wrap`					`normal`
`overflow-x`					`visible`
`overflow-y`					`visible`
`padding`					depending on individual properties
`padding-bottom`					`0`
`padding-left`					`0`
`padding-right`					`0`
`padding-top`					`0`
`page`					`auto`
`page-break-after`					`auto`
`page-break-before`					`auto`
`page-break-inside`					`auto`
`page-policy`					`start`
`pause`					implementation dependent
`pause-after`					implementation dependent
`pause-before`					implementation dependent
`perspective`					`none`
`perspective-origin`					`50% 50%`
`pitch`					`medium`
`pitch-range`					`50`
`play-during`					`auto`
`polar-anchor`					`50% 50%`
`polar-angle`					`0`
`polar-distance`					`0`
`polar-origin`					`auto`
`position`					`static`
`presentation-level`					`0`
`quotes`					`text`
`region-fragment`					`auto`
`resize`					`none`
`rest`					depending on individual properties
`rest-after`					`none`
`rest-before`					`none`
`richness`					`50`
`right`					`auto`
`rotation`					`0`
`rotation-point`					`50% 50%`
`row-gap`					`normal`
`ruby-align`					`auto`
`ruby-merge`					`separate`
`ruby-position`					`before`
`scroll-padding`					`0`
`scroll-padding-block`					`0`
`scroll-padding-block-end`					`0`
`scroll-padding-block-start`					`0`
`scroll-padding-bottom`					`0`
`scroll-padding-inline`					`0`
`scroll-padding-inline-end`					`0`
`scroll-padding-inline-start`					`0`
`scroll-padding-left`					`0`
`scroll-padding-right`					`0`
`scroll-padding-top`					`0`
`scroll-snap-align`					`none`
`scroll-snap-margin`					`0`
`scroll-snap-margin-block`					`0`
`scroll-snap-margin-block-end`					`0`
`scroll-snap-margin-block-start`					`0`
`scroll-snap-margin-bottom`					`0`
`scroll-snap-margin-inline`					`0`
`scroll-snap-margin-inline-end`					`0`
`scroll-snap-margin-inline-start`					`0`
`scroll-snap-margin-left`					`0`
`scroll-snap-margin-right`					`0`
`scroll-snap-margin-top`					`0`
`scroll-snap-stop`					`normal`
`scroll-snap-type`					`none`
`shape-image-threshold`					`0.0`
`shape-inside`					`auto`
`shape-outside`					`none`
`shape-margin`					`0`
`size`					`auto`
`speak`					`auto`
`speak-as`					`normal`
`speak-header`					`once`
`speak-numeral`					`continuous`
`speak-punctuation`					`none`
`speech-rate`					`medium`
`stress`					`50`
`string-set`					`none`
`tab-size`					`8`
`table-layout`					`auto`
`text-align`					`start`
`text-align-last`					`auto`
`text-combine-upright`					`none`
`text-decoration`					`none`
`text-decoration-color`					`currentColor`
`text-decoration-line`					`none`
`text-decoration-skip`					`objects`
`text-decoration-style`					`solid`
`text-emphasis`					depending on individual properties
`text-emphasis-color`					`currentColor`
`text-emphasis-position`					`over right`
`text-emphasis-style`					`none`
`text-indent`					`0`
`text-justify`					`auto`
`text-orientation`					`mixed`
`text-overflow`					`clip`
`text-shadow`					`none`
`text-space-collapse`					`collapse`
`text-transform`					`none`
`text-underline-position`					`auto`
`text-wrap`					`normal`
`top`					`auto`
`transform`					`none`
`transform-origin`					`50% 50% 0`
`transform-style`					`flat`
`transition`					depending on individual properties
`transition-delay`					`0s`
`transition-duration`					`0s`
`transition-property`					`all`
`transition-timing-function`					`ease`
`unicode-bidi`					`normal`
`vertical-align`					`baseline`
`visibility`					`visible`
`voice-balance`					`center`
`voice-duration`					`auto`
`voice-family`					implementation dependent
`voice-pitch`					`medium`
`voice-range`					medium
`voice-rate`					`normal`
`voice-stress`					`normal`
`voice-volume`					`medium`
`volume`					`medium`
`white-space`					`normal`
`widows`					`2`
`width`					`auto`
`will-change`					`auto`
`word-break`					`normal`
`word-spacing`					`normal`
`word-wrap`					`normal`
`wrap-flow`					`auto`
`wrap-through`					`wrap`
`writing-mode`					`horizontal-tb`
`z-index`					`auto`
Number (out of 359) →	53	122	115	345