We'll add each lyric on a separate line with the help of the line break tag: <br>.

<body>
<h1>My favorite things</h1>
<p>
Raindrops on roses<br>
Whiskers on kittens<br>
Bright copper kettles<br>
Warm woolen mittens
</p></body>
</html>
]]>

Sweet! That already looks way better.