Flat design is a graphic style that aims to avoid any graphic element providing no significant value to the structure of a template.
This is a minimalist visual approach where the design is smooth and minimal.

Flat design is a label the community has adopted for designs avoiding drop shadows, subtle textures and gradients in favour of solid colours, clean layouts and sharp typography, somewhat similar to the design of Windows 8 and the Metro UI. This post showcases 20 great website designs that all exhibit popular traits of the flat design trend.

Kick My Habits

Coloured Lines

Dear Mum

Foundation

Flat UI

Windows of New York

Dunked

More Air

Jackie Tran Anh

Vtcreative

Rdio

Jim Ramsden

DSPG

Teehan+Lax

Smartphood

Square UI

Portraits with Carter Kustera

Dan Edwards

Mud

Sputnik Creative

You can also find a lot of flat design inspiration on Dribbble, Pinterest and Behance.