The CSS ID selector matches an element based on the value of the elementβs id
attribute. In order for the element to be selected, its id
attribute must match exactly the value given in the selector.
/* The element with id="demo" */ #demo { border: red 2px solid; }
Syntax
#id_value { style properties }
Note that syntactically (but not specificity-wise), this is equivalent to the following attribute selector
:
[id=id_value] { style properties }
Examples
CSS
#identified { background-color: skyblue; }
HTML
<div id="identified">This div has a special ID on it!</div> <div>This is just a regular div.</div>
Result
Specifications
Specification | Status | Comment |
---|---|---|
Selectors Level 4 The definition of 'ID selectors' in that specification. |
Working Draft | |
Selectors Level 3 The definition of 'ID selectors' in that specification. |
Recommendation | |
CSS Level 2 (Revision 1) The definition of 'ID selectors' in that specification. |
Recommendation | |
CSS Level 1 The definition of 'ID selectors' in that specification. |
Recommendation | Initial definition |
Browser compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
ID selector (#idName ) | Chrome Full support 1 | Edge Full support 12 | Firefox Full support 1 | IE Full support 3 | Opera Full support 3.5 | Safari Full support 1 | WebView Android Full support β€37 | Chrome Android Full support 18 | Firefox Android Full support 4 | Opera Android Full support 10.1 | Safari iOS Full support 1 | Samsung Internet Android Full support 1.0 |
Legend
- Full support
- Full support