Modern Font Stacks
"System font stack CSS organized by typeface classification for every modern OS" more than sufficient for like 95% of my needs
My current HTML boilerplate - Manuel Matuzović
Charts.css
This page is a truly naked, brutalist html quine
amazing
58 bytes of css to look great nearly everywhere
namely, main { max-width: 38rem; padding: 2rem; margin: auto; }
Markdown.css - make HTML look like plain-text
css stylesheet that displays html as markdown. brilliant