[markdown] Create a table without a header in Markdown

Most Markdown parsers don't support tables without headers. That means the separation line for headers is mandatory.

Parsers that do not support tables without headers

Parsers that do support tables without headers.

CSS solution

If you're able to change the CSS of the HTML output you can however leverage the :empty pseudo class to hide an empty header and make it look like there is no header at all.