My Photoshop Classroom

Responsive Web design has transformed how websites are designed and built. It has inspired us to think beyond device classifications and to use media queries to adapt a layout to the browser’s viewport size. This, however, deviates from the hierarchical structure of CSS and characterizes elements relative to the viewport, instead of to their container.


Source: http://coding.smashingmagazine.com/2013/06/25/media-queries-are-not-the-answer-element-query-polyfill/