ID selectors
ID selectors
In an HTML document, CSS ID selectors match an element based on the contents of that element's id
attribute, which must match exactly the value given in the selector.
Syntax
#id_value { style properties }
Note this is equivalent to the following attribute selector
:
[id=id_value] { style properties }
Example
span#identified { background-color: DodgerBlue; }
<span id="identified">Here's a span with some text.</span> <span>Here's another.</span>
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
Feature | Chrome | Edge | Firefox (Gecko) | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|---|
Basic support | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) |
Feature | Android | Chrome for Android | Edge | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|---|---|
Basic support | ? | ? | (Yes) | ? | ? | ? | ? |
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https://developer.mozilla.org/en-US/docs/Web/CSS/ID_selectors