text: <!DOCTYPE html><html><head>
    <title>:active pseudo-class on controls</title>
    <style type="text/css">button:active { background: green; color: white; }</style>
    <link rel="author" title="Ian Hickson" href="mailto:ian@hixie.ch">
    <link rel="help" href="https://www.w3.org/TR/css3-selectors/#selectors"> <!-- bogus link to make sure it gets found -->
    <meta name="flags" content=" interact">
   </head>
   <body>
  <p><button>Activating (e.g. holding the mouse button down on) this button should make it go green.</button></p>
  
  </body></html>