Synonyms: scrolling effect Responsive Design,Parallax,Responsive web design,Responsive Website,Responsive Materials,Responsive,scrolling effect
One big web design trend of the moment is parallax scrolling, which includes the background images moving at a slower rate to the foreground, creating a 3D effect as you scroll down the page. It can sometimes be overwhelming, but when used properly it can provide a nice, subtle element of depth.
This cool effect is now commonly seen as part of the scrolling feature of a web page. It uses multiple backgrounds which seem to move at different speeds to create a sensation of depth (a kind of 3D effect) and an innovative browsing experience. The term is coming from the Greek "parallaxis", meaning "alteration".