Markdown to HTML

<h1>Hello World</h1>
<br>
<h2>This is a heading</h2>
<br>
Some <strong>bold</strong> and <em>italic</em> text with a <a href="https://example.com">link</a>.
<br>
<li>Item one</li>
<li>Item two</li>
<li>Item three</li>
<br>
<blockquote>A blockquote</blockquote>
<br>
<code>inline code</code> here
<br>
<hr>
<br>
<li>First</li>
<li>Second</li>
<li>Third</li>