sousa-gecko/testing/web-platform/tests/css/css-inline/text-box-trim/text-box-trim-set-dynamically-ref.html

<!DOCTYPE html>
<title>Test trimming applied dynamically</title>
<link rel="help" href="https://drafts.csswg.org/css-inline-3/#text-box-trim">
<link rel="stylesheet" href="/fonts/baseline-diagnostic/baseline-diagnostic-font.css">
<meta charset="utf-8">
<style>
#container {
  font: 100px/1 BaselineDiagnosticAlphabeticZero;
  text-box: trim-both ex alphabetic;
}
</style>
<div id="container">
  <div class="inner">█BxIF</div>
  <div class="inner">█BxIF</div>
  <div class="inner">█BxIF</div>
</div>