wpt/css/css-overflow/line-clamp/webkit-line-clamp-046.html at master · web-platform-tests/wpt · GitHub

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<!DOCTYPE html>
<meta charset="UTF-8">
<title>CSS Overflow: -webkit-box-orient: vertical is needed for -webkit-line-clamp to create a block formatting context</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-046-ref.html">
<meta name="assert" content="-webkit-line-clamp causes display: -webkit-box to create a block box, rather than to behave like display: flex as it would otherwise. However, this is only the case with -webkit-box-orient: vertical.">
<style>
.clamp {
  display: -webkit-box;
  /* no -webkit-box-orient: vertical; */
  -webkit-line-clamp: 4;
  font: 16px / 32px serif;
  white-space: pre;
  background-color: yellow;
  padding: 0 4px;

  /* If display: -webkit-box behaves the same as without -webkit-line-clamp,
   * these properties will cause the anonymous inline box to be centered. */
  -webkit-box-align: center;
  -webkit-box-pack: center;
  align-items: center;
  justify-content: center;
}
</style>

<div class="clamp">Line 1
Line 2
Line 3
Line 4
Line 5</div>