[@acs-yt Participant 11 years, 1 month ago]

I added them into the “Simple Custom CSS” plugin, downloaded from wordpress.org.

At the end, it looked like:

@media and (min-width: 992px) {
 .bbpress .col-md-8 {
    width: 100% !important;
 }
}

and

@media and (min-width: 992px) {
 .bbpress .col-md-8 {
    width: 100% !important;
 }
}

It is still not Full-Width 🙁