grayscale-one.html

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<!DOCTYPE html>

<html>

<head>

  <title>CSS Filters: Grayscale an HTML Element Using a Factor of One</title>

  <link rel="author" title="Max Vujovic" href="mailto:mvujovic@adobe.com">

  <link rel="help" href="http://www.w3.org/TR/filter-effects-1/#funcdef-grayscale">

  <link rel="match" href="grayscale-one-ref.html">

  <meta name="assert"

        content="Given a factor of one, the CSS grayscale filter function should

                 completely desaturate an HTML element.">

  <style type="text/css">

    #target {

      filter: grayscale(1);

      background-color: #f00;

      width: 100px;

      height: 100px;

  </style>

</head>

<body>

  <p>You should see a gray square.</p>

  <div id="target"></div>

</body>

</html>