How do i get rid of the yellow border of a button

Question

When i make a button tag it comes w a yellow border and fades out a bit...why?

Answer 1

after this butt = new button("PRESS ME!")
add this line.
butt.outline("none")

Answer 2

Plz check at my upload under recents named my super cool js library... Each time u click it a yellow bar surrounds it and i cant get it off

Answer 3

Thanks i'll add it