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chromium/third_party/blink/web_tests/external/wpt/css/css-text-decor/reference/line-through-vertical-ref.html 

<!DOCTYPE html>
<style>
div {
  writing-mode: vertical-rl;
  text-decoration: line-through;
  font-family: Times;
  font-size: 50px;
}
</style>
<div>
  <span lang="en">ABC</span>
  <span lang="en">ABC</span>
</div>