text-box-trim-block-in-inline-start-001.html

<!DOCTYPE html>
<title>text-box-trim: trim-start is propagated to the last formatted line,
even if it's within a block-in-inline</title>
<link rel="help" href="https://drafts.csswg.org/css-inline-3/#text-box-trim">
<link rel="help" href="https://drafts.csswg.org/css-inline-3/#text-box-edge">
<link rel="match" href="text-box-trim-block-in-inline-start-001-ref.html">
<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
<style>
.spacer {
  background: lightgray;
  block-size: 50px;
}
.target {
  font: 50px/2 Ahem;
  text-box-trim: trim-start;
  text-box-edge: text;
}
</style>
<div class="spacer"></div>
<div class="target">
  <span>
    <div>
      A<br>
      B
    </div>
  </span>
  C
</div>
<div class="spacer"></div>

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