| <!DOCTYPE html> |
| <meta charset="utf-8"> |
| <title>CSS Values and Units Test: support for the ch unit</title> |
| <link rel="author" title="Jonathan Kew" href="mailto:jkew@mozilla.com"> |
| <link rel="help" href="https://drafts.csswg.org/css-values-4/#ch"> |
| <link rel="match" href="reference/ch-unit-016-ref.html"> |
| <meta name="assert" content="The ch unit = the used advance measure of the “0” (ZERO, U+0030) glyph in the font used to render it"> |
| <style> |
| @font-face { |
| font-family: NoDigits; |
| src: local(Ahem), url("/fonts/Ahem.ttf"); |
| unicode-range: U+0000-002F, U+003A-007F; |
| } |
| @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> |
| <!-- NoDigits excludes the ASCII digits, and therefore should NOT be used |
| to derive the size of the 'ch' unit, which should instead be based on the |
| '0' in ChTestZeroWidthZero, which is zero-width. --> |
| <div class="test" style="font: 80px NoDigits, ChTestZeroWidthZero;"></div> |
| <div class="ref"></div> |
