ex-unit-003.html (1074B)
1 <!DOCTYPE html> 2 <meta charset="utf-8"> 3 <title>CSS Values and Units Test: support for the ex unit</title> 4 <link rel="author" title="Cameron McCormack" href="mailto:cam@mcc.id.au"> 5 <link rel="help" href="https://drafts.csswg.org/css-values-3/#font-relative-lengths"> 6 <link rel="match" href="reference/ex-unit-002-ref.html"> 7 <meta name="assert" content="Even in vertical writing modes, the ex unit equals the x-height of the first available font if it has reliable metrics for the x-height."> 8 <style> 9 @font-face { 10 font-family: ExTest; 11 src: url(resources/ExTest.woff); 12 } 13 div { 14 height: 10px; 15 background-color: blue; 16 margin-top: 10px; 17 } 18 .test { 19 writing-mode: vertical-rl; 20 width: 10ex; 21 } 22 .ref { 23 width: 100px; 24 } 25 </style> 26 <p>The test passes if there are two blue rectangles of equal length.</p> 27 <!-- ExTest is a font whose OS/2 table's sxHeight field is set to an 28 eighth of the font's units per em, so ex units should compute to 29 0.125em, resulting in the div being 100px wide. --> 30 <div class="test" style="font: 80px ExTest;"></div> 31 <div class="ref"></div>