<section class="parent">
  <h2>CSS Nesting</h2>
  <div>
    &ありの&lt;div>
  </div>
  <p>
    &なしの&lt;p>
  </p>
</section>
.parent {
  & div {
    color: blue;
  }
  p {
    color: red;
  }
}

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