Flat design is a newish term for both print design, web design and mobile operating system design. Flat web design refers to a design form that does away with busy-looking patterned textured backgrounds, drop shadows around lettering and boxed sections within a web site. Google was one of the first to overhaul their suite of web apps using flat web design principles and many other sites have now followed suit as well.
This type of appearance creates a very clean looking website templates and html templates. As the pixel density and image quality from LED LCD monitors, tablets and smartphones has increased, shadows and other techniques used partly to make details stand out on small displays or low resolution displays, are no longer needed. As a result, non-flat designs are slowly being dropped in styling decisions, in favor of simpler, cleaner looking, more colorful designs.
Every Last Drop