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    Class selectors

    Summary

    In an HTML document, CSS class selectors match an element based on the contents of the element's class attribute. The class attribute is defined as a space-separated list of items, and one of those items must match exactly the class name given in the selector.

    Syntax

    .classname { style properties }

    Note this is equivalent to the following attribute selector:

    [class~=classname] { style properties }

    Example

    span.classy {
      background-color: DodgerBlue;
    }
    
    <span class="classy">Here's a span with some text.</span>
    <span>Here's another.</span>
    

    Specifications

    Specification Status Comment
    Selectors Level 3
    The definition of 'class selectors' in that specification.
    Recommendation  
    CSS Level 2 (Revision 1)
    The definition of 'child selectors' in that specification.
    Recommendation  
    CSS Level 1
    The definition of 'child selectors' in that specification.
    Recommendation Initial definition

    Browser compatibility

    Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
    Basic support (Yes) (Yes) (Yes) (Yes) (Yes)
    Feature Android Chrome for Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
    Basic support ? ? ? ? ? ?

    Document Tags and Contributors

    Last updated by: MusikAnimal,