<!DOCTYPE html>
<head>
<style>
hr {
width: 70%;
margin-left: auto;
margin-right: auto;
color: blue;
}
</style>
</head>
<html>
<body>
<h1>Text text text</h1>
<p>Content</p>
<hr>
<h2>Text text text</h2>
<p>Content</p>
<hr>
<h3>Text text text</h3>
<p>Content</p>
</body>
</html>
<!--
run:
-->