“[U]ltimately, we need to break our habit of translating pixels from Photoshop directly into our CSS, and focus our attention on the proportions behind our designs. It’s about becoming context-aware: better understanding the ratio-based relationships between element and container.”

-- Responsive Web Design, p.41

“A truly responsive design begins with a flexible layout, with media queries layered upon that non-fixed foundation.”

“[S]tarting from a flexible foundation means we have less code to produce.”

-- Responsive Web Design, p.101