css/css-backgrounds/background-size-cover-001.html

<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8">

    <title>CSS Backgrounds and Borders Test: background-size - cover keyword value</title>

    <link rel="author" title="Intel" href="http://www.intel.com">
    <link rel="reviewer" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/"> <!-- 2012-11-08 -->
    <!--
    http://www.gtalbot.org/BrowserBugsSection/review/background-size-cover-001-review.html
    -->
    <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' is 'cover' that it scales the background-image, while preserving its intrinsic aspect ratio (it is 1:1 in this test), to the smallest size such that both its width and its height can completely cover the background positioning area. In this test, the background-image should be scaled to become 100px by 100px.">
    <style>
        div#ref-overlapped-red
        {
            background-color: red;
            height: 100px;
            width: 100px;
        }

        div#test-overlapping-green
        {
            background-image: url("support/50x50-green.png");
            background-repeat: no-repeat;
            background-size: cover;
            border-bottom: transparent solid 50px;
            bottom: 100px;
            height: 0px;
            padding: 25px;
            position: relative;
            width: 50px;

            /*
            Background positioning area to cover in this
            test is 100px wide by 50px tall.
            So, the image should be scaled to 100px by 100px.
            */
        }
    </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>