CSS Selectors support in Opera Presto 2.4

There are three levels of CSS, CSS level 1, 2, and 3. CSS level 2 has a revision under development, referred to as "CSS level 2, revision 1" or "CSS 2.1" for short. CSS level 3 modules are in different stages of development; for example the Selectors module is in Last Call.

When level is set to "CSS 1/2" ("CSS 1/2.1"), the property was introduced with CSS Level 1, and extended with CSS Level 2 (revision 1).

See these Web pages for further reference.

• W3C CSS Selectors Level 2.1
• W3C CSS Selectors Level 3

The following table defines which CSS Selectors are supported by Opera.

CSS Selectors support in Opera Presto 2.4

Selector	Level	Support
Adjacent Sibling selector (E1 + E2)	CSS 2	Yes
Attribute and attribute selectors [att] [att=val] [att~=val] [att|=val]	CSS 2	Yes
Attribute selectors with namespace (|attr)	CSS 3	Yes
Attribute start selector [att^=val]	CSS 3	Yes
Attribute end selector [att$=val]	CSS 3	Yes
Attribute contains selector [att*=val]	CSS 3	Yes
Child selector ( > )	CSS 2	Yes
Class selectors ( . )	CSS 1	Yes
Descendant selectors (   )	CSS 1	Yes
ID selectors ( # )	CSS 1	Yes
Universal Selector ( * )	CSS 2	Yes
Type selectors ( h1 )	CSS 1	Yes
Type selectors with namespace ( ns|E )	CSS 3	Yes
Negation pseudo-class :not()	CSS 3	Yes
:active	CSS 1/2	Yes
::after, :after	CSS 2	Yes
::before, :before	CSS 2	Yes
:checked	CSS 3	Yes
:default	CSS 3	Yes
:disabled	CSS 3	Yes
:empty	CSS 3	Yes
:enabled	CSS 3	Yes
:first	CSS 3	Yes
:first-child	CSS 2	Yes
::first-letter, :first-letter	CSS 1	Yes
::first-line, :first-line	CSS 1	Yes
:first-of-type	CSS 3	Yes
:focus	CSS 2	Yes
:hover	CSS 2	Yes
:in-range	CSS 3	Yes
:invalid	CSS 3	Yes
:lang()	CSS 2	Yes
:left	CSS 3	Yes
:link	CSS 1/2	Yes
:last-child	CSS 3	Yes
:last-of-type	CSS 3	Yes
:nth-child()	CSS 3	Yes
:nth-last-child()	CSS 3	Yes
:nth-of-type()	CSS 3	Yes
:nth-last-of-type()	CSS 3	Yes
:only-child	CSS 3	Yes
:only-of-type	CSS 3	Yes
:optional	CSS 3	Yes
:out-of-range	CSS 3	Yes
:read-only	CSS 3	Yes
:read-write	CSS 3	Yes
:required	CSS 3	Yes
:right	CSS 3	Yes
:root	CSS 3	Yes
::selection	CSS 3	Yes
:target	CSS 3	Yes
:valid	CSS 3	Yes
:visited	CSS 1/2	Yes