Codepen is an awful experience on mobile (and is slow, as you said). But your page is an html page about html tips. Surely you can just embed them in the page itself?

Please keep it, personal notes are worth it. Maybe less navigation or +/- voting, then ranking would help us navigate your site?

Like in the good old commandlinefu.

Silly question, why not just render the html on the pages? e.g. the popover is something I wanted to see