Avant is a huge user interface kit featuring tonnes of elements for your web projects. Included are headers, footers, navigation bars, media players, forms and many more flat UI elements. Avant has been meticulously designed with vector shapes in Photoshop and all of the included elements fit neatly into a 12 column grid.

https://creativemarket.com/Medialoot/186037-Avant-Huge-Component-Based-UI-Kit