Normalize.css is a small CSS file that provides better cross-browser consistency in the default styling of HTML elements. It’s a modern, HTML5-ready, alternative to the traditional CSS reset.
via html5rocks.com
<!DOCTYPE html><html><head></head><body>Smallest HTML file!</body></html>
Bootstrap Generator
Kick-start your Twitter Bootstrap project the way you want. Simply alter the options below and click "Generate" to get your compiled Bootstrap CSS file.
via martinbean.co.uk
via designmodo.com
via sublimevideo.net