*Taps 🎤 * if you're designing for college students, many may not have their own laptops. Those that do may not have _nice_ laptops/computers. Test. Your. Stuff. In. Computer. Labs. Test on free library computers. What looks great on your BEAUTIFUL designer/developer Mac may look like shit on these.
I have great folks. I still asked them to physically come to the lab just to see how small done stuff got.
This applies MUUUUCH more broadly tbh. If you’re in the business, assume your setup is 4x as nice as your users’