Easiest and the best way to display HTML code in your blog posts on blogspot blogs

Use <textarea></textarea> and embed all your HTML between them.

<a href="http://tpops.blogspot.com">link to myblog</a><p> Everything in the textarea is displayed as it is, no html gets interpreted. "readonly" makes it even more beautiful</p><p>Scrollbar appears automatically if the content grows bigger than the textarea, for this example I have used cols="55" rows="5"</p>