CAN ROBLOXS UI STOP CHANGING??

I AM TRYING TO MAKE A CUSTOM DESIGN FRUTIGER AERO/WINDOWS 7 DESIGN AND IT KEEPS ON FUCKING CHANGING EVERYTIME I GO TO WORK ON IT

also does anyone have a similar segoe ui font? please. i am desperate. (update just realized i am a total moron and that it already is there.)

i am about to kill myself how do i replicate a windows 7 scrollbar BECAUSE I CAN BARELY FIND SHIT HELP LPLASE