| <!DOCTYPE html> |
| <meta charset="utf-8"> |
| <title>CSS Values and Units Test: support for the ch unit</title> |
| <link rel="author" title="Cameron McCormack" href="mailto:cam@mcc.id.au"> |
| <link rel="help" href="https://drafts.csswg.org/css-values-3/#font-relative-lengths"> |
| <link rel="match" href="reference/ch-unit-016-ref.html"> |
| <meta name="assert" content="The ch unit is equal to 0em if the zero glyph's advance is 0."> |
| <style> |
| @font-face { |
| font-family: ChTestZeroWidthZero; |
| src: url(resources/ChTestZeroWidthZero.woff); |
| } |
| div { |
| height: 10px; |
| background-color: blue; |
| margin-top: 10px; |
| } |
| .test { |
| width: calc(100px + 5ch); |
| } |
| .ref { |
| width: 100px; |
| } |
| </style> |
| <p>The test passes if there are two blue rectangles of equal length.</p> |
| <!-- The '0' glyph in ChTestZeroWidthZero has a horizontal advance of |
| zero, so ch units should compute to 0em, resulting in the div being |
| 100px wide. --> |
| <div class="test" style="font: 20px ChTestZeroWidthZero;"></div> |
| <div class="ref"></div> |
