chromium/third_party/blink/web_tests/external/wpt/css/css-inline/text-box-trim/text-box-trim-start-001.html

<!DOCTYPE html>
<title>Test text-box-trim: trim-end on various writing modes</title>
<link rel="help" href="https://drafts.csswg.org/css-inline-3/#text-box-edge">
<link rel="help" href="https://drafts.csswg.org/css-inline-3/#text-box-trim">
<link rel="match" href="text-box-trim-start-001-ref.html">
<script src="support/variant-class.js"></script>
<meta name="variant" content="?class=auto">
<meta name="variant" content="?class=text">
<meta name="variant" content="?class=cap">
<meta name="variant" content="?class=ex">
<meta name="variant" content="?class=vrl,auto">
<meta name="variant" content="?class=vrl,text">
<meta name="variant" content="?class=vrl,cap">
<meta name="variant" content="?class=vrl,ex">
<meta name="variant" content="?class=vlr,auto">
<meta name="variant" content="?class=vlr,text">
<meta name="variant" content="?class=vlr,alphabetic">
<style>
@import "support/MetricsTestFont.css";

.spacer {
  background: lightgray;
  block-size: 100px;
}
.target {
  font: 100px/2 MetricsTestFont;
  text-box-trim: trim-start;
}
.vrl { writing-mode: vertical-rl; }
.vlr { writing-mode: vertical-lr; }
.auto .target { text-box-edge: auto; }
.text .target { text-box-edge: text; }
.cap  .target { text-box-edge: cap; }
.ex   .target { text-box-edge: ex; }
.vlr.alphabetic
      .target { text-box-edge: text alphabetic; }
</style>
<div class="spacer"></div>
<div class="target">ApÉx</div>
<div class="spacer"></div>