Fullscreen Overlay Menu is a responsive menu that takes up the entire screen when expanded. The menu usually can be activated by clicking or touching the hamburger menu button. Fullscreen overlay menu gives you the power to overlay and animate one screen on top of another. It can simulate modal windows, dropdown navigation menus, and other on-screen prompts, all without leaving your current screen. So in this post we`ve gathered 25 Fullscreen Overlay Navigation Menu Web Designs to find inspiration for your next web design project.