css - Why can’t I seem to use background-clip?

Question

My attempt to use background-clip: content-box is failing. The entire box has a background, including the padding area, not just the content area.

http://jsfiddle.net/alanhogan/7YjCV/6/

What am I doing wrong?

Answer 1

This is a common gotcha with shorthand properties in CSS.

Because background-clip is one of the properties that's set by the background shorthand property, your background style is implicitly setting background-clip to border-box (its initial value), overriding your explicit background-clip style:

background-clip: content-box;
background: #ddd none /* border-box */;

If you move your background-clip declaration beneath background, it'll work as expected:

background: #ddd none;
background-clip: content-box;

jsFiddle demo