wpt/css/css-contain/quote-scoping-invalidation-003.html at master · web-platform-tests/wpt · GitHub

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<!doctype html>
<meta charset=utf-8>
<title>CSS-contain test: style containment dynamic containment set unset set invalidation</title>
<link rel="author" title="Daniil Sakhapov" href="sakhapov@google.com">
<link rel="match" href="reference/quote-scoping-invalidation-003-ref.html">
<link rel="help" href="https://un5n798jx6qx6j0rmf2verhh.julianrbryant.com/css-contain-1/#containment-style">

<style>
  #root {
    quotes: "A" "Z" "1" "9" "(" ")" "+" "-";
  }
  #root::before, #root span::before {
    content: open-quote;
  }
  #root::after {
    content: close-quote;
  }
 .contain-style {
   contain: style;
 }
</style>

<p>Test passes if the text below is "A119" (not including the quotation marks).<p>
<div id="root">
  <div id="scope">
    <span id="span1"></span>
    <span id="span2"></span>
  </div>
  <span></span>
</div>

<script>
  document.body.offsetTop;
  scope.style.contain = "style";
  document.body.offsetTop;
  scope.style.contain = "";
  document.body.offsetTop;
  scope.style.contain = "style";
  document.body.offsetTop;
  span1.remove();
</script>