Perbedaan antara tipe pertama dan anak pertama
<div class="parent">
<h1>Child</h1> <!-- h1:first-child, h1:first-of-type -->
<div>Child</div> <!-- div:nth-child(2), div:first-of-type -->
<div>Child</div>
<div>Child</div>
</div>
Glorious Gnu