MUI CSS sets deault style properties for a few useful HTML elements that can be used within Angular apps:
<h1>Heading 1</h1>
<h2>Heading 2</h2>
<h3>Heading 3</h3>
<h4>Heading 4</h4>
<h5>Heading 5</h5>
<h6>Heading 6</h6>
<hr />
<div>
<a href="#">Links</a>
</div>
<div>
<strong>Strong</strong>
</div>
<div>
<em>Emphasis</em>
</div>
<div>
<abbr title="Abbreviation">Abbr</abbr>
</div>