css/css-nesting/implicit-nesting.html

<!DOCTYPE html>
<title>Implicit nesting</title>
<link rel="author" title="Steinar H. Gunderson" href="mailto:sesse@chromium.org">
<link rel="help" href="https://drafts.csswg.org/css-nesting-1/">
<link rel="match" href="implicit-nesting-ref.html">
<style>
  .test {
    background-color: red;
    width: 30px;
    height: 30px;
    display: grid;
  }

  .test-1 {
    > div {
      background-color: green;
    }
  }

  .test-2 {
    .test-2-child {
      background-color: green;
    }
  }
  .test-2-child {
    background-color: red;
  }

  .test-3-child {
    background-color: red;
  }
  .test-3-child {
    .test-3 & {
      background-color: green;
    }
  }

  .test-4 {
    :is(&) {
      background-color: green;
    }
  }

  .test-5 {
    :is(.test-5, &.does-not-exist) {
      background-color: green;
    }
  }

  .test-6 {
    > .foo,.test-6-child,+ .bar {
      background-color: green;
    }
  }

  .test-7 {
    > .foo, .bar, + .test-7-sibling {
      background-color: green;
    }
  }

  .test-8 {
    > .foo, .test-8-child, + .bar {
      background-color: green;
    }
  }

  body * + * {
    margin-top: 8px;
  }
</style>
<body>
  <p>Tests pass if <strong>block is green</strong></p>
  <div class="test test-1"><div></div></div>
  <div class="test test-2"><div class="test-2-child"></div></div>
  <div class="test test-3"><div class="test-3-child"></div></div>
  <div class="test test-4"></div>
  <div class="test test-5"><div class="test-5"></div></div>
  <div class="test test-6"><div class="test-6-child"></div></div>
  <div class="test test-7" style="display:none"></div><div class="test test-7-sibling"></div>
  <div class="test test-8"><div class="test-8-child"></div></div>
</body>