css/css-pseudo/first-line-insert-text-node-dynamic-ref.html - external/github.com/web-platform-tests/wpt - Git at Google

 <!doctype html>
 <title>CSS Test: ::first-line updates after inserting text node at start of paragraph (reference)</title>
 <style>
 p { width: 100px; }
 p::first-line { text-decoration: underline; color: #CB000F; }
 </style>
 <p>I am adding a new text. This is a test paragraph. You can insert extra text at its start; the ::first-line styles should be updated to accommodate this new text.</p>
	<!doctype html>
	<title>CSS Test: ::first-line updates after inserting text node at start of paragraph (reference)</title>
	<style>
	p { width: 100px; }
	p::first-line { text-decoration: underline; color: #CB000F; }
	</style>
	<p>I am adding a new text. This is a test paragraph. You can insert extra text at its start; the ::first-line styles should be updated to accommodate this new text.</p>