css/CSS2/text/text-indent-103.xht

<!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: Text-indent set to '50%'</title>
        <link rel="author" title="Microsoft" href="http://www.microsoft.com/" />
        <link rel="help" href="http://www.w3.org/TR/CSS21/text.html#propdef-text-indent" />
        <link rel="help" href="http://www.w3.org/TR/CSS21/text.html#indentation-prop" />
        <link rel="help" href="https://drafts.csswg.org/css-text-3/#text-indent-property"/>
        <link rel="match" href="text-indent-103-ref.xht"/>
        <meta name="flags" content="ahem" />
        <meta name="assert" content="Ensure that text-indent 50% adds 50% of the containing block's width in front of the text." />
        <link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
        <style type="text/css">
            #parent
            {
                font: 16px/1em Ahem;
                position: relative;
                width: 400px;
            }
            #reference
            {
                color: red;
                left: 0;
                position: absolute;
                top: 0;
                z-index: -1;
            }
            #test
            {
                text-indent: 50%;
                margin-left: -50%;
                margin-right: 50%;
            }
        </style>
    </head>
    <body>
        <p>Test passes if there is no red visible on the page.</p>
        <div id="parent">
            <div id="reference">X</div>
            <div id="test">X</div>
        </div>
    </body>
</html>