I'll adjust the Smart Face Track mode to expand to exactly 75% of your screen width on larger desktop monitors (and 90% on smaller laptops/tablets).

Additionally, I've increased the individual face tile size from the cramped 86px up to 125px. This guarantees that even when the container expands, the tiles don't just multiply in number—they actually render the faces large enough to clearly identify and interact with.

Here is the targeted update for app.html: