<!DOCTYPE HTML> <title>Reference: The nested empty span should be skipped when finding the ::first-letter content</title> <link rel="author" title="Jaeyong Bae" href="jdragon.bae@gmail.com"> <style> first-letter { color: green } </style> <div> <span><first-letter>F</first-letter>irst letter should be green</span> </div>