chromium/third_party/blink/web_tests/external/wpt/css/css-nesting/conditional-rules-ref.html

<!DOCTYPE html>
<title>Conditional rules with nesting</title>
<link rel="author" title="Adam Argyle" href="mailto:[email protected]">
<link rel="help" href="https://drafts.csswg.org/css-nesting-1/">
<style>
  .test {
    background-color: red;
    width: 30px;
    height: 30px;
    display: grid;
  }

  @media (min-width: 10px) {
    .test-5 > div {
      background-color: green;
    }
  }

  @media (min-width: 10px) {
    .test-6 > div {
      background-color: green;
    }
  }

  @supports (display: grid) {
    .test-10 {
      background-color: green;
    }
  }

  @layer {
    .test-11 {
      background-color: green !important;
    }
  }

  @scope (.test-12) {
    :scope {
      background-color: green;
    }
  }

  div {
    container-type: inline-size;
  }
  @container (width >= 0px) {
    .test-13 {
      background-color: green;
    }
  }

  body * + * {
    margin-top: 8px;
  }
</style>
<body>
  <p>Tests pass if <strong>block is green</strong></p>
  <div class="test test-5"><div></div></div>
  <div class="test test-6"><div></div></div>
  <div class="test test-10"><div></div></div>
  <div class="test test-11"><div></div></div>
  <div class="test"><div class="test-12"></div></div>
  <div class="test"><div class="test-13"></div></div>
</body>