1 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
2 <html>
3 <head>
4 <title>CSS Test: Vertical-align using 'em' units with a negative zero value, -0em</title>
5 <link rel="author" title="Microsoft" href="http://www.microsoft.com/">
6 <link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#propdef-vertical-align">
7 <link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#leading">
8 <meta name="flags" content="ahem">
9 <meta name="assert" content="The 'vertical-align' property sets a negative zero length value in 'em' units.">
10 <style type="text/css">
11 div
12 {
13 font: 20px/1 Ahem;
14 position: relative;
15 }
16 #div3
17 {
18 position: absolute;
19 top: 0;
20 }
21 #span1
22 {
23 color: red;
24 vertical-align: -0em;
25 }
26 </style>
27 </head>
28 <body>
29 <p>Test passes if there is at least one black box and there is no red visible on the page.</p>
30 <div id="div1">
31 <div id="div2">
32 <span id="span1">X</span>
33 </div>
34 <div id="div3">X</div>
35 </div>
36 </body>
37 </html>