The content CSS property replaces content with a generated value. It can be used to define what is rendered inside an element or pseudo-element. For elements, the content property specifies whether the element renders normally (normal or none) or is replaced with an image (and associated "alt" text). For pseudo-elements and margin boxes, content defines the content as images, text, both, or none, which determines whether the element renders at all....nothing fundamentally wrong with building on the contributions of others...Check the browser compatibility chart . All browsers support gradients...