Custom css wont work

Hey there!

Ive added this css code, but nothing happens with the buttons and stuff? you know why?
‘
.cwv3_dialog .cwv3_title { background: #F3BB53; }
.cwv3_btns { background: rgba(0,0,0, .0)}
.cwv3_dialog .cwv3_btns .cwv3_enter a {background-color: #738E7A; border-radius: 6px;}
.cwv3_dialog .cwv3_btns .cwv3_exit a {background-color: #738E7A; border-radius: 6px;} ‘

https://wordpress.org/plugins/content-warning-v2/