Callouts, or UI boxes, are often used to highlight alerts, warnings, and other key information. They work best when they span the full width of the screen, making the message clear and hard to miss.
Full-width callouts use space effectively, pull focus to the content, and add a strong, immersive feel to the page.
❌ Figure: Bad example - Box doesn't look right
✅ Figure: Good example - Box looks great
Enhance visual impact - Stretching edge-to-edge creates a modern, cinematic feel that’s perfect for rich visuals and content-heavy layouts
Work beautifully on all devices - They adapt smoothly to any screen size, especially mobile, for a seamless experience everywhere
Make the most of space - No more wasted margins on big screens; every pixel is put to good use
Give designers more freedom - Full-width layouts allow creative use of images, backgrounds, and flow, great for storytelling or product showcases