css/css-flexbox/align-items-001.htm

<!DOCTYPE html PUBLIC "-//W3C//DTD//XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
    <head>
        <title>CSS Test: A flex container with the 'align-items' property set to 'center'</title>
        <link rel="author" title="Microsoft" href="http://www.microsoft.com/" />
        <link rel="help" href="http://www.w3.org/TR/css-flexbox-1/#align-items-property" />
        <link rel="help" href="http://www.w3.org/TR/css-flexbox-1/#align-items-property" />
        <link rel="match" href="reference/align-content-001-ref.html" />
        <meta name="assert" content="This test checks that the flex container with 'align-items: center' centers each flex item's margin box in the cross-axis of its line." />
        <meta name="fuzzy" content="maxDifference=0-1; totalPixels=0-6217" />
        <style type="text/css">
            #flexbox
            {
                background: linear-gradient(to bottom, green 0, green 25px, red 25px, red 75px, green 75px, green 100px);
                align-items: center;
                display: flex;
                height: 100px;
                width: 300px;
            }
            div div
            {
                background-color: green;
                height: 52px;
                width: 150px;
            }
        </style>
    </head>
    <body>
        <p>Test passes if there is no red visible on the page.</p>
        <div id="flexbox">
            <div></div>
            <div></div>
        </div>
    </body>
</html>