chromium/src/third_party/blink/web_tests/paint/selection/first_letter/first_letter_1rr.html - manifest_repos/chromium_src - Git at Google

 <!doctype html>
 <style>p::first-letter { font-size: 500%; color: red; }</style>
 <p>  [!(5)#]9abcdefghi</p>
 <script>
 const selection = window.getSelection();
 const sample = document.querySelector('p');
 // Select "abc"
 selection.collapse(sample.firstChild, 10);
 selection.extend(sample.firstChild, 13);
 </script>
	<!doctype html>
	<style>p::first-letter { font-size: 500%; color: red; }</style>
	<p> [!(5)#]9abcdefghi</p>
	<script>
	const selection = window.getSelection();
	const sample = document.querySelector('p');
	// Select "abc"
	selection.collapse(sample.firstChild, 10);
	selection.extend(sample.firstChild, 13);
	</script>