<!DOCTYPE html>
<html lang="ja">
<meta charset="UTF-8">
<title>Dynamic break point change in ruby</title>
<link rel="author" title="Xidorn Quan" href="https://www.upsuper.org">
<link rel="author" title="Mozilla" href="https://www.mozilla.org">
<link rel="help" href="https://drafts.csswg.org/css-ruby-1/#break-between">
<link rel="match" href="ruby-line-breaking-003-ref.html">
<link rel="stylesheet" href="support/ruby-common.css">
<style>
  #test {
    border: 1px solid;
    text-align: center;
  }
</style>
<div id="test">
  <p><ruby><rb>一<rb>二<rb>三<rb>四<rb>五<rb>六<rb>七<rb>八</ruby></p>
  <p><ruby><rbc>一</rbc><rbc>二</rbc><rbc>三</rbc><rbc>四</rbc><rbc>五</rbc><rbc>六</rbc><rbc>七</rbc><rbc>八</rbc></ruby></p>
</div>
<script>
  let div = document.getElementById("test");
  document.body.offsetHeight;
  test.style.width = "2.5em";
  document.body.offsetHeight;
  test.style.width = "4.5em";
  document.body.offsetHeight;
  test.style.width = "2.5em";
</script>