HTML/CSSIntermediate#css#responsive

What is the difference between responsive and adaptive design?

Responsive design uses fluid grids and media queries to continuously adapt to any screen size. Adaptive design uses a set of fixed, predefined layouts that switch at specific breakpoints, often serving different markup per device class.

Example
/* Responsive: fluid width */
.container { width: 90%; max-width: 1200px; }
/* Adaptive: fixed breakpoint layouts */
@media (max-width: 600px) { .container { width: 320px; } }

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