CodePen Embed - bGgKwBN

<div class="parent">
    <p>p1</p>
    <span>span1</span>
    <p>p2</p>
    <p>p3</p>
    <span>span2</span>
</div>

p:nth-child(3) { 
  color:red;
}
p:nth-of-type(3) {
  color:blue;
}

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