31 lines
1.3 KiB
HTML
31 lines
1.3 KiB
HTML
<!DOCTYPE html>
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<title>CSS aspect-ratio: img block size with box-sizing (vertical writing mode)</title>
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<link rel="help" href="https://drafts.csswg.org/css-sizing-4/#aspect-ratio">
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<link rel="match" href="../../reference/ref-filled-green-100px-square.xht" />
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<style>
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img {
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writing-mode: vertical-rl;
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border-top: 40px solid green;
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}
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</style>
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<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
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<!--
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1st: A green rect 60x100.
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border-top is 60x40 and the content box is 60x60.
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We use 'aspect-ratio: auto && <ratio>', so the aspect-ratio works with
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content-box dimensions always. The inline size of the content box is
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(100px - 40px) = 60px, so the block size is 60px * 1/1 = 60px.
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2nd: A green rect 20x100.
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border-top is 20x40 and the content box is 20x60.
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3rd: A green rect 20x100.
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border-top is 20x40 and the content box is 20x60 because we compute
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the block size by aspect-ratio which works with border-box and so the
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block size is 100px / 5 = 20px.
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-->
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<img src="support/1x1-green.png" style="height: 100px; aspect-ratio: auto 1/10; box-sizing: border-box;"
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><img src="support/1x1-green.png" style="height: 60px; aspect-ratio: 1/3; box-sizing: content-box;"
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><img src="support/1x1-green.png" style="height: 100px; aspect-ratio: 1/5; box-sizing: border-box;">
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