The buttons at the bottom of the mod selection screen all have the same height (28), but slightly different widths (two have 220, three 190, three 194). This patch standardizes them to a width of 180.
As a consequence it also looks better at screens with a width of 960, which is equivalent to 1920 at gui.scale = "2", 2880 at 3×, and 3840 at 4×.
Before:
After: