Fluid Images by Ethan Marcotte

Resources

To design responsively, you need a fluid grid, media queries to catch the breakpoints, and fluid images that fit like gloves in any layout.

Quick overview
Back in 2010, Ethan Marcotte started this dance craze called responsive web design. Fluid Images is an excerpt of chapter three of Responsive Web Design, wherein Ethan demonstrates how to make fixed-width images fluid and how to add them to fluid grids to build sites that respond to the size of the viewport with grace and charm.