This effect is really amazing. It work well on desktop on all screen and window resolution. But on mobile the light is a little bit offset. I don't know why! It's not a problem due to the window adress bar. It persist also on full-screen mode. I'm working at 854 x 480 viewport size on 3840 x 6832 layout size, with scroll to. Can I simply hack the offset manually (maybe adding x pixel Y and X?i don't know where..)
Thanks for your job and sorry for my bad English:)