Looking for the code to change the outline of the submit background to

Looking for the code to change the outline of the submit background to black. I have made the button itself black but there is a tiny outside line that is still green

Hello Jake,

Thanks for reaching out to Jotform Support. Are you referring to this form? I can see that you were able to change the color of the submit button to black.

If you are pertaining to something else, please let us know.