A userscript that reveals the header when hovering near the top of the screen
When the mouse is near the top of the viewport, the header will slide down and allow interaction.
Once the mouse is moved away from the top or out of the viewport, the header will slide up out of view.
This userscript was created to replace the GitHub-FixedHeader userstyle (requires Stylus) in which the header is always visible and fixed at the top of the viewport.
