<!doctype html>
<meta charset="utf8">
<title>CSS contain-intrinsic-size: fieldset</title>
<link rel="author" title="Vladimir Levin" href="mailto:vmpstr@chromium.org">
<link rel="help" href="https://drafts.csswg.org/css-sizing-4/#intrinsic-size-override">

<style>
fieldset {
  box-sizing: content-box;
  width: 111px;
  height: 222px;
}
</style>

<fieldset>
  <legend>This is a legend</legend>
  This is some content.
</fieldset>