chromium/src/third_party/blink/web_tests/fast/multicol/span/height-increase.html - manifest_repos/chromium_src - Git at Google

 <!DOCTYPE html>
 <script>
     onload = function() {
         document.body.offsetTop;
         document.getElementById('elm').style.height = '200px';
     }
 </script>
 <p>The word 'PASS' should be seen below.</p>
 <div style="-webkit-columns:3; color:black; background:yellow;">
     <div style="-webkit-column-span:all; background:black;">
         <div id="elm"></div>
     </div>
     PASS
 </div>
	<!DOCTYPE html>
	<script>
	onload = function() {
	document.body.offsetTop;
	document.getElementById('elm').style.height = '200px';
	}
	</script>
	<p>The word 'PASS' should be seen below.</p>
	<div style="-webkit-columns:3; color:black; background:yellow;">
	<div style="-webkit-column-span:all; background:black;">
	<div id="elm"></div>
	</div>
	PASS
	</div>