CSS Findings From The Threads App: Part 2

Ahmad Shadeed examines the CSS of Meta's full web version of the Threads app, released in late August, and highlights several layout choices he finds interesting. He notes that the team positioned the fixed header with a CSS variable reassigned per context and that the navigation was animated by transforming each item individually, which he suspects was done for performance. He also flags a possible bug where width: 100vw causes horizontal scrolling depending on system scrolling settings, and questions why the navigation uses fixed grid columns rather than flexbox.