testing/web-platform/tests/css/css-backgrounds/background-size-013.html


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<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title>CSS Backgrounds and Borders Test: background-size - one auto keyword and one &lt;length&gt; values</title>
    <link rel="author" title="Intel" href="http://www.intel.com">
    <link rel="reviewer" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/"> <!-- 2012-11-14 -->
    <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" title="3.9. Sizing Images: the 'background-size' property">
    <link rel="match" href="../reference/ref-filled-green-100px-square.xht">
    <meta name="flags" content="image">
    <meta name="assert" content="Check if 'background-size' has one 'auto' and one length values, then the second value is the height of the corresponding background image and the first value (corresponding to the width of the background image) is resolved by using the image's intrinsic ratio (in this test, the image's intrinsic ratio is 1:1) and (multiplied by) the size of the other dimension. Therefore the used width of the background-size in this test should be 100px.">
    <style>
        #ref-overlapped-red {
            background-color: red;
            height: 100px;
            width: 100px;
        }
        #test-overlapping-green {
            background-image: url(support/1x1-green.png);
            background-repeat: no-repeat;
            background-size: auto 100px;
            bottom: 100px;
            height: 100px;
            position: relative;
        }
    </style>
  </head>
  <body>
    <p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
    <div id="ref-overlapped-red"></div>
    <div id="test-overlapping-green"></div>
  </body>
</html>