Flat design

https://www.invisionapp.com/inside-design/your-guide-to-using-flat-design/

As I've mentioned before, Flat design is a user interface design style that uses simple, two-dimensional elements and bright colors. It is often contrasted with the real-life design style that gives the illusion of three dimensions. Its minimalist, bright, simple, and it's used all over. Poster designs, emojis, apps, windows icons, and so much more. There are many pros to flat design, its simplicity in shape, color, style. But there are also cons. Flat design does not use drop shadow, 3d effects, some designers are even going the next level to semi-flat design. Flat design is something seen everywhere and I think It will be around for awhile.