One of the big trends of the recent few years has been flat web design, with little or no depth or layering of elements, with a simplistic approach that draws the eye to what design elements do exist, without distraction.
While the craze for flat design does seem to have died down a bit, there are still plenty of quality websites utilizing flat design very effectively.
Even if your whole website isn’t flat, it’s a good idea to utilize some of the principles of flat design, and draw inspiration from sites that use it effectively:
BrandAid
Infinium
Daniel Spatzek
Christmas with Joy
Lunar
VT Creative
Miceli Studios
Buchanan Chamberlin
eTecc
Vertical Loop