How to remove button outline in Opera on focus

Question

Does anybody know how to remove the dotted outline on buttons in Opera?

Answer 1

Further to my tip above -- with experience I've found that it doesn't always work, and isn't always appropriate anyway, since it can change the way the element is rendered in subtle and sometimes unpleasant ways.

So, if that doesn't work, another thing you can do which often does, is to specify the outline color as "rgba(0,0,0,0)"