How to change active field outer boarder color in form block

Hi,

When select a field, there are outer border lines (not the filed border), is there a way to change the outer border line color?

I want to change the black border lines to white.

Please help! 

Hi. Can you share link to page in screenshot? We can check easier

Thanks for the reply, I have found below css to do the job!

//Remove active field focus borders
*:focus {
    outline: none;
}