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firefox/testing/web-platform/tests/css/css-writing-modes/wm-propagation-001.html
Daniel Baumann 5e9a113729
Adding upstream version 140.0.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
2025-06-25 09:37:52 +02:00

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HTML

<html>
<meta chartset=utf-8>
<title>CSS-Writing Modes Test: propagation of the writing-mode property from body to root</title>
<link rel="author" title="Florian Rivoal" href="https://florian.rivoal.net">
<link rel=help href="https://drafts.csswg.org/css-writing-modes-3/#principal-flow">
<link rel="match" href="wm-propagation-001-ref.html">
<meta name=assert content="the writing mode of the body must be propagated to the root, but the computed value must not change.">
<style>
html {
writing-mode: horizontal-tb;
}
body {
writing-mode: vertical-rl;
width: 0; height: 0;
}
html::after {
content: "This text must be horizontal.";
display: block;
/* The writing mode inherited from the root must be horizontal
since the root's computed value should be horizontal */
}
</style>
<script>
document.documentElement.append("This text must be vertical.");
/* This is direct content of the root,
and should therefore be vertical,
as the root's used value is vertical */
</script>