Picnic CSS is an invasive and lightweight CSS library to get your project started. Supports all modern browsers and IE9+.
- Only CSS3 is needed and your HTML5 stays highly semantic*.
- 5.0kb when minimized and zipped last time I checked.
- Normalize.css is used, achieving a solid foundation.
- Support: IE 9+ and others. No fancy CSS3 on IE8.
- Responsive: The nav and the grids are responsive.
* Except for the grids and a bit of the nav :(