Has anyone had any luck using CSS to override Gmail's :focus indicator? I have had success using the psuedo class :focus on some anchor tags with Outlook for Mac 2016 but am struggling with Gmail. Below is what I am experimenting with:

a:focus {outline: 0!important; text-decoration: underline!important;}
a:focus p {text-decoration: underline!important;}
a:focus img {outline: 8px solid #000000!important; outline-offset: -16px!important;}
a:focus span {text-decoration: underline!important;}