Selector Unions

A list of comma-separated selectors apply to the union of all of the elements.

The selector union has the following syntax:

<selector>, <selector>, <selector>
        <style type="text/css"> 
        a, [lang|="en"] { 
            border: thin black solid; 
            padding: 4px; 
        <a href=""> Visit the </a> 
        <span lang="en-uk">HTML</span>
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Selectors Combination:
  1. Selector Unions
  2. Selecting Descendant Elements
  3. Selecting Child Elements
  4. Immediate Sibling Selector
  5. General Sibling Selector