html/rendering/widgets/button-layout/block-in-inline-ref.html - external/github.com/web-platform-tests/wpt - Git at Google

 <!DOCTYPE html>
 <button style="width: 100px; height: 100px;">
   <div style="width: 100%; height: 100%; background: green;"></div>
 </button>
	<!DOCTYPE html>
	<button style="width: 100px; height: 100px;">
	<div style="width: 100%; height: 100%; background: green;"></div>
	</button>