W3Schools' Browser support reference is tested regularly with all major browsers.
The table below lists all CSS3 properties and their browser support:
| Property | IE | Firefox | Chrome | Safari | Opera |
|---|---|---|---|---|---|
| align-content | 11 | 28 | 21 | 7 | 12.1 |
| align-items | 11 | 20 | 21 | 7 | 12.1 |
| align-self | 11 | 20 | 21 | 7 | 12.1 |
| @keyframes | 10 | 16 | 4 | 4 | 12.1 |
| animation | 10 | 16 | 4 | 4 | 12.1 |
| animation-name | 10 | 16 | 4 | 4 | 12.1 |
| animation-duration | 10 | 16 | 3 | 4 | 12.1 |
| animation-timing-function | 10 | 16 | 4 | 4 | 12.1 |
| animation-delay | 10 | 16 | 4 | 4 | 12.1 |
| animation-iteration-count | 10 | 16 | 4 | 4 | 12.1 |
| animation-direction | 10 | 16 | 4 | 4 | 12.1 |
| animation-play-state | 10 | 16 | 4 | 4 | 12.1 |
| backface-visibility | 10 | 16 | 36 | 15 | |
| background-clip | 9 | 4 | 4 | 3 | 10.5 |
| background-origin | 9 | 4 | 4 | 3 | 10.5 |
| background-size | 9 | 4 | 4 | 4.1 | 10 |
| border-bottom-left-radius | 9 | 4 | 5 | 5 | 10.5 |
| border-bottom-right-radius | 9 | 4 | 5 | 5 | 10.5 |
| border-image | 11 | 15 | 16 | 6 | 15 |
| border-image-outset | 11 | 15 | 15 | 6 | 15 |
| border-image-repeat | 11 | 15 | 15 | 6 | 15 |
| border-image-slice | 11 | 15 | 15 | 6 | 15 |
| border-image-source | 11 | 15 | 15 | 6 | 15 |
| border-image-width | 11 | 13 | 15 | 6 | 15 |
| border-radius | 9 | 4 | 5 | 5 | 10.5 |
| border-top-left-radius | 9 | 4 | 5 | 5 | 10.5 |
| border-top-right-radius | 9 | 4 | 5 | 5 | 10.5 |
| box-decoration-break | |||||
| box-shadow | 9 | 4 | 10 | 5.1 | 10.5 |
| box-sizing | 8 | 29 | 10 | 5.1 | 9.5 |
| break-after | 10 | 11.1 | |||
| break-before | 10 | 11.1 | |||
| break-inside | |||||
| column-count | 10 | 2 | 4 | 3 | 15 |
| column-fill | 13 | ||||
| column-gap | 10 | 2 | 4 | 3 | 15 |
| column-rule | 10 | 2 | 4 | 3 | 15 |
| column-rule-color | 10 | 2 | 4 | 3 | 15 |
| column-rule-style | 10 | 2 | 4 | 3 | 15 |
| column-rule-width | 10 | 2 | 4 | 15 | |
| column-span | 10 | 4 | 15 | ||
| column-width | 10 | 2 | 4 | 3 | 15 |
| columns | 10 | 9 | 4 | 3 | 15 |
| fit | |||||
| flex | 11 | 28 | 29 | 6.1 | 12.1 |
| flex-basis | 11 | 28 | 29 | 6.1 | 12.1 |
| flex-direction | 11 | 28 | 29 | 6.1 | 12.1 |
| flex-flow | 11 | 28 | 29 | 6.1 | 12.1 |
| flex-grow | 11 | 28 | 29 | 6.1 | 12.1 |
| flex-shrink | 11 | 28 | 29 | 6.1 | 12.1 |
| flex-wrap | 11 | 28 | 29 | 6.1 | 12.1 |
| @font-face | 9 | 3.6 | 4 | 3 | 10 |
| @font-feature-values | |||||
| font-feature-settings | 10 | 34 | 16 | 25 | |
| font-kerning | |||||
| font-language-override | |||||
| font-size-adjust | 3 | ||||
| font-stretch | |||||
| font-synthesis | |||||
| font-variant | |||||
| font-variant-alternates | |||||
| font-variant-caps | |||||
| font-variant-east-asian | |||||
| font-variant-ligatures | |||||
| font-variant-numeric | |||||
| font-variant-position | |||||
| hanging-punctuation | |||||
| hyphens | 10 | 6 | 13 | 5.1 | |
| icon | |||||
| image-orientation | 26 | ||||
| image-rendering | 11.6 | ||||
| image-resolution | |||||
| justify-content | 11 | 28 | 29 | 6.1 | 12.1 |
| line-break | |||||
| mark | |||||
| mark-after | |||||
| mark-before | |||||
| marks | |||||
| marquee-direction | |||||
| marquee-play-count | |||||
| marquee-speed | |||||
| marquee-style | |||||
| nav-down | 11.5 | ||||
| nav-index | 11.5 | ||||
| nav-left | 11.5 | ||||
| nav-right | 11.5 | ||||
| nav-up | 11.5 | ||||
| object-fit | |||||
| object-position | |||||
| opacity | 9 | 2 | 4 | 3.1 | 9 |
| order | 11 | 28 | 29 | 6.1 | 12.1 |
| outline-offset | 3.5 | 4 | 3 | 10.5 | |
| overflow-wrap | 9 | 3.5 | 3 | 9.5 | |
| overflow-x | 9 | 3.5 | 4 | 3 | 9.5 |
| overflow-y | 9 | 4 | 3 | 9.5 | |
| @page | 8 | 19 | 5 | 6 | |
| perspective | 10 | 16 | 36 | 4 | 23 |
| perspective-origin | 10 | 16 | 36 | 4 | 23 |
| resize | 5 | 4 | 4 | 15 | |
| rest | |||||
| rest-after | |||||
| rest-before | |||||
| ruby-align | |||||
| tab-size | 4 | 21 | 6.1 | 15 | |
| text-align-last | 5.5 | 12 | 35 | ||
| text-combine-upright | |||||
| text-decoration-color | 6 | ||||
| text-decoration-line | 6 | ||||
| text-decoration-style | 6 | ||||
| text-justify | 5.5 | ||||
| text-orientation | |||||
| text-overflow | 6 | 7 | 4 | 3.1 | 11 |
| text-shadow | 10 | 3.5 | 4 | 4 | 9.6 |
| text-underline-position | |||||
| transform | 10 | 16 | 36 | 3.2 | 23 |
| transform-origin | 10 | 16 | 36 | 3.2 | 23 |
| transform-style | 11 | 16 | 36 | 4.0 | 23 |
| transition | 10 | 16 | 26 | 6.1 | 12.1 |
| transition-delay | 10 | 16 | 26 | 6.1 | 12.1 |
| transition-duration | 10 | 16 | 26 | 6.1 | 12.1 |
| transition-property | 10 | 16 | 26 | 6.1 | 12.1 |
| transition-timing-function | 10 | 16 | 26 | 6.1 | 12.1 |
| word-break | 5.5 | 15 | 4 | 3.1 | 15 |
| word-wrap | 5.5 | 3.5 | 4 | 3.1 | 10.5 |
| writing-mode |
| Supported by Internet Explorer | |
| Supported by Firefox | |
| Supported by Google Chrome | |
| Supported by Safari | |
| Supported by Opera |
| Supported by Internet Explorer with the prefix -ms- | |
| Supported by Firefox with the prefix -moz- | |
| Supported by Google Chrome with the prefix -webkit- | |
| Supported by Safari with the prefix -webkit- | |
| Supported by Opera with the prefix -webkit- |
For some properties you see the browser icon and a number:
| 11 | 26 | 29 | 5 | 15 |
The number indicates in which browser version the property was first supported.
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