contain-layout-flexbox-001-ref.html

<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Containment Test: Reference file</title>
<link rel="author" title="Manuel Rego Casasnovas" href="mailto:[email protected]">
<style>
div {
  display: inline-flex;
  border: 5px solid green;
  /* Layout containment creates a stacking context, the following lines simuluate the same in the reference file. */
  position: relative;
  z-index: 1;
}
</style>

<p>This test passes if it has the same output as the reference. You see the word "before", a 10px green square at the bottom, and then the word "after".</p>
before<div></div>after

chromium/third_party/blink/web_tests/external/wpt/css/css-contain/reference/contain-layout-flexbox-001-ref.html