58 lines
1.7 KiB
HTML
58 lines
1.7 KiB
HTML
<!DOCTYPE html>
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<meta charset="UTF-8">
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<title>CSS Writing Modes Test: computed 'direction' of root element when 'writing-mode' for <body> propagates to viewport</title>
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<link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
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<link rel="help" href="https://www.w3.org/TR/css-writing-modes-3/#principal-flow">
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<!--
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Issue 3066: [css-writing-modes] Does vertical writing mode of an HTML body
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element cause an orthogonal flow?
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https://github.com/w3c/csswg-drafts/issues/3066
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-->
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<meta name="assert" content="When the root element has a <body> child element, then the principal writing mode is instead taken from the values of 'writing-mode' and 'direction' on such first child element instead of taken from the root element. In this test, a small script verifies that the computed value of 'direction' of the root element itself is not affected by such propagation.">
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<!--
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This test *only* verifies the computed value of 'direction' of the
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root element.
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This test does *not* verify if the 'writing-mode' value of
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the body element propagates to the root element.
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-->
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<style>
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html
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{
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direction: ltr;
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writing-mode: vertical-rl;
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}
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body
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{
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direction: rtl;
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writing-mode: vertical-lr;
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}
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</style>
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<script>
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function startTesting()
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{
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test(function()
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{
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assert_equals(getComputedStyle(document.documentElement).direction, "ltr" );
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}, "Second test on computed value of 'direction' of root element.");
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}
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startTesting();
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</script>
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