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| CSS | Browsers | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Syntax | Specific Syntax | 1.0 | 2.0 | 2.1 | 3.0 | IE | Netscape | Opera | Safari | |
| Inclusion Methods | X | X | X | X | 3.0 | 4.0B2 | 3.5 | 1.0 | ||
| External Style Sheets | X | X | X | X | 3.0 | 4.0B2 | 3.5 | 1.0 | ||
| Embedded Style Sheets | X | X | X | X | 3.0 | 4.0B2 | 3.5 | 1.0 | ||
| Inline Style Sheets | X | X | X | X | 3.0 | 4.0B3 | 3.5 | 1.0 | ||
| @Rules | X | X | X | 4.0 | 4.0 | 3.5 | 1.0 | |||
| @charset | -- | X | X | 5.5 | 6.0 | ?? | ?? | |||
| @import | X | X | X | 4.0 | 6.0 | 3.5 | 1.0 | |||
| @media | -- | X | X | 4.0 | 6.0 | 3.5 | 1.0 | |||
| @namespace | -- | -- | -- | -- | 6.0 | -- | ?? | |||
| @page | -- | X | X | 5.5 | -- | 4.0 | -- | |||
| @fontdef | -- | -- | -- | -- | 4.0-4.x | -- | -- | |||
| @font-face | -- | X | -- | 4.0 | -- | -- | -- | |||
| Rule Set Syntax | X | X | X | X | 3.0 | 4.0 | 3.5 | 1.0 | ||
| Selector Grouping | X | X | X | X | 3.0 | 4.0 | 3.5 | 1.0 | ||
| Declaration Grouping | X | X | X | X | 3.0 | 4.0 | 3.5 | 1.0 | ||
| Declaration Shorthands | X | X | X | X | 3.0 | 4.0 | 3.5 | 1.0 | ||
| Selectors | X | X | X | X | 3.0 | 4.0 | 3.5 | 1.0 | ||
| Element - Namespace | -- | -- | -- | X | -- | -- | 6.0 | ?? | ||
| Element - Universal | -- | X | X | X | 5.0 | 6.0 | 4.0 | ?? | ||
| Element - Simple | X | X | X | X | 3.0 | 4.0 | 3.5 | 1.0 | ||
| Element - Descendent | X | X | X | X | 3.0 | 4.0 | 3.5 | 1.0 | ||
| Element - Child | -- | X | X | X | -- | 6.0 | 3.5 | 1.0 | ||
| Element - Adjacent | -- | X | X | X | -- | 6.0 | 5.0 | 1.0 | ||
| Attribute - Simple | -- | X | X | X | -- | 6.0 | 4.0 | 1.0 | ||
| Attribute - Value | -- | X | X | X | -- | 6.0 | 4.0 | 1.0 | ||
| Attribute - Begin Value | -- | -- | -- | X | -- | 6.0 | -- | 1.0 | ||
| Attribute - End Value | -- | -- | -- | X | -- | 6.0 | -- | 1.0 | ||
| Attribute - Substring Value | -- | -- | -- | X | -- | 6.0 | -- | 1.0 | ||
| Attribute - One-Of-Many | -- | X | X | X | -- | 6.0 | 4.0 | 1.0 | ||
| Attribute - Hyphen | -- | X | X | X | -- | 6.0 | 4.0 | 1.0 | ||
| Attribute - Namespace | -- | -- | -- | X | -- | 6.0 | -- | ?? | ||
| HTML - Class | X | X | X | X | 3.0 | 4.0 | 3.5 | 1.0 | ||
| HTML - ID | X | X | X | X | 3.0 | 4.0 | 3.5 | 1.0 | ||
| Pseudo-Classes | X | X | X | X | 3.0 | 4.0 | 3.5 | 1.0 | ||
| :link | X | X | X | X | 3.0 | 4.0 | 3.5 | 1.0 | ||
| :visited | X | X | X | X | 3.0 | 4.0 | 3.5 | 1.0 | ||
| :active | X | X | X | X | 4.0 | 6.0 | 5.0 | 1.0 | ||
| :hover | -- | X | X | X | 4.0 | 6.0 | 4.0 | 1.0 | ||
| :focus | -- | X | X | X | -- | 6.0 | 7.0 | -- | ||
| :enabled | -- | -- | -- | X | -- | -- | -- | -- | ||
| :disabled | -- | -- | -- | X | -- | -- | -- | -- | ||
| :checked | -- | -- | -- | X | -- | -- | -- | -- | ||
| :indeterminate | -- | -- | -- | X | -- | -- | -- | -- | ||
| :root | -- | -- | -- | X | -- | 6.0 | -- | 1.0 | ||
| :empty | -- | -- | -- | X | -- | 6.0 | -- | ?? | ||
| :not(x) | -- | -- | -- | X | -- | 6.0 | -- | 1.0 | ||
| :contains("x") | -- | -- | -- | X | -- | -- | -- | -- | ||
| :first-child | -- | X | X | X | -- | 6.0 | 7.0 | -- | ||
| :nth-child(n) | -- | -- | -- | X | -- | -- | -- | -- | ||
| :nth-last-child(n) | -- | -- | -- | X | -- | -- | -- | -- | ||
| :last-child | -- | -- | -- | X | -- | 6.0 | -- | -- | ||
| :only-child | -- | -- | -- | X | -- | -- | -- | -- | ||
| :first-node | -- | -- | -- | -- | -- | 6.0 | -- | -- | ||
| :last-node | -- | -- | -- | -- | -- | 6.0 | -- | -- | ||
| :first-of-type | -- | -- | -- | X | -- | -- | -- | -- | ||
| :nth-of-type(n) | -- | -- | -- | X | -- | -- | -- | -- | ||
| :nth-last-of-type(n) | -- | -- | -- | X | -- | -- | -- | -- | ||
| :last-of-type | -- | -- | -- | X | -- | -- | -- | -- | ||
| :only-of-type | -- | -- | -- | X | -- | -- | -- | -- | ||
| :lang(x) | -- | X | X | X | -- | 7.1 | 7.5 | -- | ||
| :target | -- | -- | -- | X | -- | -- | -- | -- | ||
| :viewport | -- | -- | -- | -- | -- | 6.0 | -- | -- | ||
| :viewport-scroll | -- | -- | -- | -- | -- | 6.0 | -- | -- | ||
| :canvas | -- | -- | -- | -- | -- | 6.0 | -- | -- | ||
| :scrolled-content | -- | -- | -- | -- | -- | 6.0 | -- | -- | ||
| :first | -- | X | X | X | -- | -- | -- | -- | ||
| :left | -- | X | X | X | -- | -- | -- | -- | ||
| :right | -- | X | X | X | -- | -- | -- | -- | ||
| Pseudo-Elements | X | X | X | X | 5.5B1 | 6.0 | 3.5 | 1.0 | ||
| :before | -- | X | X | X | -- | 6.0 | 4.0 | 1.0 | ||
| :after | -- | X | X | X | -- | 6.0 | 4.0 | 1.0 | ||
| :first-letter | X | X | X | X | 5.5B1 | 6.0 | 3.5 | 1.0 | ||
| :first-line | X | X | X | X | 5.5B1 | 6.0 | 3.5 | 1.0 | ||
| :selection | -- | -- | -- | X | -- | -- | -- | 1.3 | ||
| Miscellaneous Syntax | X | X | X | 3.0 | 4.0 | 3.5 | 1.0 | |||
| Unicode Escapes | -- | X | X | 6.0 | 6.0 | 6.0 | 1.0 | |||
| Comments | X | X | X | 3.0 | 4.0 | 3.5 | 1.0 | |||
| !important | X | X | X | 4.0 | 6.0 | 3.5 | 1.0 | |||