Skeleton: A Dead Simple, Responsive Boilerplate for Mobile-Friendly Development

Minimal CSS Framework for semantic HTML

Spectre.css - A Lightweight, Responsive and Modern CSS Framework

A drop-in collection of CSS styles to make simple websites just a little nicer

Convert modern CSS into something browsers understand

Some inspiration and modern ideas for subtle hover effects.

A replacement for infinite scrolling.

Web book about how to make a website with HTML.