CSS for Markdown, numbered headings

Note, i am not a Markdown purist but the insertion of HTML in Markdown is often considered to be bad form.

• You aren’t using a type. It’s a class.
• Where are you linking the stylesheet in the Markdown document?

I also strongly suggest you do not mess with stylesheets during the learning and development of CSS styling on a document. Just put the styling in the document as shown here so you can edit, save, and immediately see the changes.

<style type="text/css">
.poetry {
 padding: 1em;
 font-family: Georgia, Garamond, serif;
 font-style:italic;
 font-size:110%;
 line-height: 1.6em;
 background-color: rgba(230,210,0,.3);
 color: rgba(100, 80,0,1);
}
</style>

When you’re satisfied, copy and paste it into an external stylesheet, if you so desire. But bear in mind, there is no requirement to use an external stylesheet.