Flat design is a user interface design style that uses simple, two-dimensional elements and bright colors. Their is a lot of flat designs that have a cartoon look to it and that also has a lot to do with flat design.It often has a lot of pictures that give it a weird look like crazy puzzles of a person spinning in a hole, mot of it gives an illusion.It also takes away a lot of unnecessary styling in design,Simple minimalism as some say.Flat design usually gets straight to the point and docent have anything that will make you look for a long period of time.Most companies and social media websites of apps now have flat design as their app logo like Instagram and safari.