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<!DOCTYPE html>
<html class="reftest-wait">
<meta charset="utf-8">
<title>CSS Overflow: -webkit-line-clamp display invalidation test</title>
<link rel="author" title="Andreu Botella" href="mailto:abotella@igalia.com">
<link rel="help" href="https://drafts.csswg.org/css-overflow-4/#line-clamp">
<link rel="match" href="reference/webkit-line-clamp-001-ref.html">
<meta name="assert" content="-webkit-line-clamp needs a specified value of `display: -webkit-box`, but the computed value is set to `display: flow-root`. This test checks that changing the specified value from `-webkit-box` to `flow-root` makes the box no longer a line-clamp container.">
<script src="/common/reftest-wait.js"></script>
<style>
.clamp {
display: -webkit-box;
-webkit-box-orient: vertical;
-webkit-line-clamp: 4;
overflow: hidden; /* can be removed once implementations update their old -webkit-line-clamp implementations */
font: 16px / 32px serif;
white-space: pre;
background-color: yellow;
}
</style>
<div class="clamp">Line 1
Line 2
Line 3
Line 4
Line 5</div>
<script>
requestAnimationFrame(() => {
requestAnimationFrame(() => {
// When `display: -webkit-box` is present with -webkit-line-clamp, its
// computed value becomes `display: flow-root`, but the -webkit-line-clamp
// behavior needs `-webkit-box` as the specified value.
const clampEl = document.querySelector(".clamp");
clampEl.style.display = getComputedStyle(clampEl).display;
takeScreenshot();
});
});
</script>
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