Because you make things with WordPress

CSS

Watch Rolling up Our Responsive Sleeves — a video of Ethan Marcotte’s June 2012 AEA presentation.

The Less Framework allows you to create consistently beautiful adaptive layouts with ease.

Let Noah Stokes take you to school with CSS Floats 101.

Serve fluid video with perfect aspect ratios on all major vid services. PLUS: code files. YEAH.

Let Richard Rutter demystify how to do type well on the web.

CSS-Tricks.com: your one-stop-shop for all things educational on CSS.

Serve different stylesheets that rearrange a site’s layout for the viewport.

Fluid grids are the foundation of responsive web design.