<!DOCTYPE html>
<html>
    <head>
        <title>Spanner as ::before pseudo element</title>
    </head>
    <body>
        <p>There should be two rectangles with identical sizes below. The first one should be yellow
        with some dots inside. The second one should be blue with nothing inside.</p>
        <div style="line-height:100px; background:blue;">
            <div style="background:yellow;">..........</div>
            &nbsp;
        </div>
    </body>
</html>