I see on a lot of sheet, the selection of a input make appear a border of different color or size. That border is black when the css is not precised. But after some reading of the css of this different sheet I never found how is altered that border. My first trying is to point to: but it's not working. Did someone know how to point that "Effect" for alter or remove it on custom sheet ? (Ps: I just need the css for "Point" it. From that I think I could be able to edit or remove the apparition of the box with my knowledge)