This is a list of CSS properties and selectors with the first browser versions that support them. The list includes most CSS2.1 properties and some of CSS3, more will be added as time permits. CSS3 is under development, please refer to the w3c site for more detailed information.
It's highly likely that some earlier versions of browsers support some CSS properties. Research for this table started with these browser versions IE 5, Firefox 1, Safari 1, Opera 6, Chrome 0.2. The current released versions of those browsers are Internet Explorer 8, Firefox 3.6, Safari 4, Opera 10, Chrome 5.
Some of the CSS3 properties have experimental support while browsers and the standards are being sorted out. These properties have been marked in the table and can be prefixed with "-webkit-" for webkit based browsers such as safari and Chrome, "-moz-" for mozilla Gecko based browsers such as Firefox, and "-o-" for Presto based browsers such as Opera. Use with caution.
If you notice any errors please let me know so I can correct them.
Properties
Speech
| Property | CSS Version | IE  | Firefox  | Safari  | Opera  | Chrome  |
|---|---|---|---|---|---|---|
| azimuth | 1 | unknown | unknown | unknown | unknown | unknown |
| pause | 2.1 | none | none | unknown | 7 | unknown |
| pause-after | 2.1 | none | none | unknown | 7 | unknown |
| pitch | 2.1 | none | none | unknown | none | unknown |
| pitch-range | 2.1 | none | none | unknown | none | unknown |
| play-during | 2.1 | none | none | unknown | none | unknown |
| voice-family | 2.1 | none | none | none | 8 | none |
| volume | 2.1 | none | none | none | none | none |
Color and Background
| Property | CSS Version | IE | Firefox | Safari | Opera | Chrome |
|---|---|---|---|---|---|---|
| background | 1 | 5 | 1 | 1 | 6 | 0.2 |
| Background (multiple) | 3 | 9 | 3.6 | 3 | none | 0.2 |
| background-attachment | 1 | 7 | 1 | 1 | 6 | 0.2 |
| background-clip | 3 | 9 | -moz- | -webkit- | none | -webkit- |
| background-color | 1 | 5 | 1 | 1 | 6 | 0.2 |
| background-image | 1 | 5 | 1 | 1 | 6 | 0.2 |
| background-position | 1 | 8 | 1 | 1 | 6 | 0.2 |
| background-repeat | 1 | 5 | 1 | 1 | 6 | 0.2 |
| background-size | 3 | 9 | -moz- | -webkit | -o- | -webkit- |
| color | 1 | 5 | 1 | 1 | 6 | 0.2 |
Border and Layout
| Property | CSS Version | IE | Firefox | Safari | Opera | Chrome |
|---|---|---|---|---|---|---|
| border | 1 | 5 | 1 | 1 | 6 | 0.2 |
| border-bottom | 1 | 5.5 | 1 | 1 | 6 | 0.2 |
| border-bottom-color | 2.1 | 5 | 1 | 1 | 6 | 0.2 |
| border-bottom-style | 2.1 | 5.5 | 1 | 1 | 6 | 0.2 |
| border-bottom-width | 1 | 5.5 | 1 | 1 | 6 | 0.2 |
| border-collapse | 2.1 | full 8, part 5 | 1 | 1 | 6 | 0.2 |
| border-color | 1 | 5 | 1 | 1 | 6 | 0.2 |
| border-radius | 3 | 9 | 4 | -webkit- | 10.50 | -webkit- |
| border-spacing | 2.1 | 8 | 1 | 1 | 6 | 0.2 |
| border-style | 1 | full 8, part 5.5 | 1 | 1 | 6 | 0.2 |
| border-width | 1 | 5 | 1 | 1 | 6 | 0.2 |
| box-shadow | 3 | 9 | 4 | 4 | 10.5 | 10 |
| box-sizing | 3 | 8 | -moz- | -webkit- | 7 | -webkit- |
| caption-side | 2.1 | 8 | 1 | 1 | 6 | 0.2 |
| clear | 1 | 5 | 1 | 1 | 6 | 0.2 |
| empty-cells | 2.1 | full 8, part 7 | 1 | 1.2 | 6 | 0.2 |
| float | 1 | 5 | 1 | 1 | 6 | 0.2 |
| margin | 1 | 5 | 1 | 1 | 6 | 0.2 |
| margin-bottom | 1 | 5 | 1 | 1 | 6 | 0.2 |
| padding | 1 | 5 | 1 | 1 | 6 | 0.2 |
| padding-bottom | 1 | 5 | 1 | 1 | 6 | 0.2 |
| table-layout | 2.1 | 5 | 1 | 1 | 6 | 0.2 |
Positioning
| Property | CSS Version | IE | Firefox | Safari | Opera | Chrome |
|---|---|---|---|---|---|---|
| bottom | 2.1 | full 8, part 5.5 | 1 | 1 | 6 | 0.2 |
| clip | 2.1 | 5.5 | 1 | 1 | 6 | 0.2 |
| display | 1 | full 8, part 5 | 1 | 1 | 7 | 0.2 |
| elevation | 2.1 | none | unknown | unknown | none | unknown |
| height | 1 | 5 | 1 | 1 | 6 | 0.2 |
| left | 2.1 | full 8 part 5.5 | 1 | 1 | 6 | 0.2 |
| max-height | 2.1 | 7 | 1 | 2 | 6 | 0.2 |
| max-width | 2.1 | 7 | 1 | 2 | 6 | 0.2 |
| overflow | 2.1 | full 7, part 5 | 1 | 1 | 7 | 0.2 |
| position | 2.1 | full 7, part 5 | 1 | 1 | 6 | 0.2 |
| right | 2.1 | full 8, part 5.5 | 1 | 1 | 6 | 1 |
| top | 2.1 | full 8, part 5.5 | 1 | 1 | 6 | 0.2 |
| visibility | 2.1 | 5 | 1 | 1 | 6 | 0.2 |
| width | 1 | 5 | 1 | 1 | 6 | 0.2 |
| word-spacing | 1 | full 8, part 5 | 1 | 1 | 6 | 0.2 |
| z-index | 2.1 | full 8, part 5 | 1 | 1 | 6 | 0.2 |
Generated content
| Property | CSS Version | IE | Firefox | Safari | Opera | Chrome |
|---|---|---|---|---|---|---|
| content | 2.1 | 8 | 1 | unknown | 6 | 1 |
| counter-increment | 2.1 | 8 | 2 | 3.1 | 6 | 0.4 |
| cue | 2.1 | none | none | none | 8 | none |
| cue-after | 2.1 | none | none | none | 8 | none |
| quotes | 2.1 | 8 | 1 | unknown | 6 | unknown |
| richness | 2.1 | none | none | none | none | none |
User Interface
| Property | CSS Version | IE | Firefox | Safari | Opera | Chrome |
|---|---|---|---|---|---|---|
| cursor | 2.1 | 5.5 | 1 | 1.2 | 7 | 0.2 |
| outline | 2.1 | 8 | 1.5 | 1.2 | 7 | 0.2 |
| outline-color | 2.1 | 8 | 1.5 | 1.2 | 7 | 0.2 |
| outline-width | 2.1 | 8 | 1.5 | 1.2 | 7 | 0.2 |
Font and Text
| Property | CSS Version | IE | Firefox | Safari | Opera | Chrome |
|---|---|---|---|---|---|---|
| direction | 2.1 | 5 | 1 | 1 | 8 | 0.2 |
| font | 1 | 5 | 1 | 1 | 6 | 0.2 |
| font-family | 1 | 5 | 1 | 1 | 6 | 0.2 |
| font-size | 1 | 5 | 1 | 1 | 6 | 0.2 |
| font-size-adjust | 3 | none | 3 | none | none | none |
| font-stretch | 3 | 9 | none | none | none | none |
| font-style | 1 | 5 | 1 | 1 | 6 | 0.2 |
| font-variant | 1 | 5 | 1 | 1.2 | 6 | 0.2 |
| font-weight | 1 | full 8, part 5 | 1 | 1 | 6 | 0.2 |
| letter-spacing | 1 | 5 | 1 | 1 | 6 | 0.2 |
| line-height | 1 | 5 | 1 | 1 | 6 | 0.2 |
| ruby-align | 3 | 5 | none | none | none | none |
| ruby-overhang | 3 | 5 | none | none | none | none |
| ruby-position | 3 | 5 | none | none | none | none |
| speak | 2.1 | none | none | none | 8 | none |
| speak-header | 2.1 | none | none | none | none | none |
| speak-numeral | 2.1 | none | none | none | none | none |
| speak-punctuation | 2.1 | none | none | none | none | none |
| speech-rate | 2.1 | none | none | none | none | none |
| stress | 2.1 | none | none | none | none | none |
| text-align | 1 | 5 | 1 | 1 | 6 | 0.2 |
| text-decoration | 1 | 5 | 1 | 1 | 6 | 0.2 |
| text-indent | 1 | 5 | 1 | 1 | 6 | 0.2 |
| text-transform | 1 | 5 | 1 | 1 | 6 | 0.2 |
| unicode-bidi | 2.1 | 5 | 1 | 3.1 | 8 | 0.2 |
| vertical-align | 1 | 5 | 1 | 1 | 6 | 0.2 |
| white-space | 1 | full 8, part 5 | full 3, part 1 | 3.1 | 6 | 0.4 |
Lists
| Property | CSS Version | IE | Firefox | Safari | Opera | Chrome |
|---|---|---|---|---|---|---|
| list-style | 1 | 5 | 1 | 1 | 6 | 0.2 |
| list-style-image | 1 | 5 | 1 | 1 | 6 | 0.2 |
| list-style-position | 1 | 5 | 1 | 1 | 6 | 0.2 |
| list-style-type | 1 | full 8, part 7 | 1 | 1 | part 6 | 0.2 |
Printing
| Property | CSS Version | IE | Firefox | Safari | Opera | Chrome |
|---|---|---|---|---|---|---|
| orphans | 2.1 | 8 | none | 1.2 | 6 | 0.2 |
| page-break-after | 2.1 | 5 | none | 1.3 | 6 | 0.2 |
| page-break-inside | 2.1 | 8 | none | 1.3 | 6 | 0.2 |
| widows | 2.1 | 8 | none | 1.3 | 6 | 0.2 |
Selectors
Pseudo-elements
| Property | CSS Version | IE | Firefox | Safari | Opera | Chrome |
|---|---|---|---|---|---|---|
| ::after | 2.1 | 8 | 1 | 1 | 6 | 0.2 |
| ::before | 2.1 | 8 | 1 | 1 | 6 | 0.2 |
| ::first-letter | 1 | 5.5 | 1 | 1 | 6 | 0.2 |
| ::first-line | 1 | 5.5 | 1 | 1 | 6 | 0.2 |
Pseudo-classes
| Property | CSS Version | IE | Firefox | Safari | Opera | Chrome |
|---|---|---|---|---|---|---|
| :active | 1 | full 8, part 7 | 1 | 1 | 6 | 0.2 |
| :checked | 3 | 9 | 1 | 3.1 | 9 | 0.4 |
| :disabled | 3 | 9 | 1 | 3 | 9 | 0.2 |
| :empty | 3 | 9 | 1 | 3 | 9 | 0.2 |
| :enabled | 3 | 9 | 1 | 3 | 9 | 0.2 |
| :first | 2 | 8 | none | none | none | none |
| :first-child | 2.1 | 7 | 1 | 3.1 | 9.5 | 0.4 |
| :first-of-type | 3 | 9 | 1 | 3.1 | 9.5 | 0.4 |
| :focus | 2.1 | 8 | 1 | 1 | 7 | 0.2 |
| :hover | 2.1 | full 7, part 5 | 1 | 1 | 6 | 0.2 |
| :lang | 2.1 | 8 | 1 | 3 | 8 | 0.2 |
| :last-child | 3 | 9 | 1 | 3.1 | 9.5 | 0.4 |
| :last-of-type | 3 | 9 | 1 | 3.1 | 9.5 | 0.4 |
| :left | 2.1 | 8 | none | none | unknown | none |
| :link | 1 | 5 | 1 | 1 | 6 | 0.2 |
| :not | 3 | 9 | 1 | 1 | 9 | 0.2 |
| :nth-child | 3 | 9 | 1 | 3.1 | 9.5 | 0.4 |
| :nth-last-child | 3 | 9 | 1 | 3.1 | 9.5 | 0.4 |
| :nth-last-of-type | 3 | 9 | 1 | 3.1 | 9.5 | 0.4 |
| :nth-of-type | 3 | 9 | 1 | 3.1 | 9.5 | 0.4 |
| :only-child | 3 | 9 | 1 | 3.1 | 9.5 | 0.4 |
| :right | 2.1 | 8 | none | none | unknown | none |
| :root | 1 | 9 | 1 | 1 | 9.5 | 0.2 |
| :visited | 1 | 5 | 1 | 1 | 6 | 0.2 |
| only-of-type | 3 | 9 | 1 | 3.1 | 9.5 | 0.4 |
Combinators
| Property | CSS Version | IE | Firefox | Safari | Opera | Chrome |
|---|---|---|---|---|---|---|
| Adjacent sibling selector | 2.1 | 7 | 1 | 1 | 6 | 0.2 |
| Child selector | 2.1 | 7 | 1 | 1 | 6 | 0.2 |
| Descendant selector | 1 | 5 | 1 | 1 | 6 | 0.2 |
| General sibling selector | 3 | 7 | 1 | 2 | 9 | 0.2 |
Attribute Selectors
| Property | CSS Version | IE | Firefox | Safari | Opera | Chrome |
|---|---|---|---|---|---|---|
| Attribute selector | 2.1 | 7 | 1 | 1 | 6 | 0.2 |
| Attribute selector contains | 3 | 7 | 1 | 1 | 6 | 0.2 |
| Attribute selector ends with | 3 | 7 | 1 | 1 | 6 | 0.2 |
| Attribute selector equal | 2.1 | 7 | 1 | 1 | 6 | 0.2 |
| Attribute selector hyphen values | 3 | 7 | 1 | 1 | 6 | 0.2 |
| Attribute selector in list | 3 | 7 | 1 | 1 | 6 | 0.2 |
| Attribute selector starts with | 3 | 7 | 1 | 1 | 6 | 0.2 |
Element Selectors
| Property | CSS Version | IE | Firefox | Safari | Opera | Chrome |
|---|---|---|---|---|---|---|
| Class selector | 1 | full 7, part 5 | 1 | 2 | 6 | 0.2 |
| Id selector | 1 | 5 | 1 | 1 | 6 | 0.2 |
| Type selector | 1 | 5 | 1 | 1 | 6 | 0.2 |
| Universal selector | 2.1 | 7 | 1 | 1 | 6 | 0.2 |
Others
Specificity
| Property | CSS Version | IE | Firefox | Safari | Opera | Chrome |
|---|---|---|---|---|---|---|
| !important | 1 | full 7, part 5 | 1 | 1 | 6 | 0.2 |
At-rules
| Property | CSS Version | IE | Firefox | Safari | Opera | Chrome |
|---|---|---|---|---|---|---|
| @charset | 2.1 | 5.5 | 1 | 1 | 6 | 0.2 |
| @font-face | 2.1 | 5.5 | 3.5 | 3.1 | unknown | 0.2 |
| @import | 1 | 5 | 1 | 1 | 6 | 0.2 |
| @media | 2.1 | 5.5 | 1 | 1 | 6 | 0.2 |
| @page | 2.1 | full 8, part 5 | none | none | 6 | none |