CodePen Embed - LYxrRwv

<ul class="list">
    <li class="a">a</li>
    <li class="b">b</li>
    <li class="c">c</li>
</ul>

li.a + li {
    /*a 클래스를 가지는 li 바로 옆(아래) 요소*/
    color:red;
}

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