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: Line-height using 'em' units with a positive 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-line-height">
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 'line-height' property sets a positive zero length value in 'em' units.">
10 <style type="text/css">
11 div
12 {
13 font: 20px/1 Ahem;
14 position: relative;
15 width: 1em;
16 }
17 #div2, #div3
18 {
19 background: black;
20 }
21 #div2
22 {
23 line-height: +0em;
24 }
25 #div3
26 {
27 height: 1em;
28 left: 1.1em;
29 position: absolute;
30 top: -0.5em;
31 }
32 </style>
33 </head>
34 <body>
35 <p>Test passes if the two boxes below are the same height.</p>
36 <div id="div1">
37 <div id="div2">X X</div>
38 <div id="div3"></div>
39 </div>
40 </body>
41 </html>