Example
| Selector | Description |
|---|---|
* | Universal selector (all elements) |
div | Tag selector (all <div> elements) |
.blue | Class selector (all elements with class blue) |
.blue.red | All elements with class blue and red (a type of Compound selector) |
#headline | ID selector (the element with "id" attribute set to headline) |
:pseudo-class | All elements with pseudo-class |
::pseudo-element | Element that matches pseudo-element |
:lang(en) | Element that matches :lang declaration, for example <span lang="en"> |
div > p | child selector |
Note: The value of an ID must be unique in a web page. It is a violation of the HTML standard to use the value of an ID more than once in the same document tree.
A complete list of selectors can be found in the CSS Selectors Level 3 specification.
