block-container class ... both our themes results would appear to back that up. As mine is doing the same ... here's the background of that class (the background of page element we're concerned with) as demonstrated from the for the first post in my 'Latest activity' below ... it's the same in the header, there, too:userContent.css in Firefox for purely style based stuff.Oh right, you want the element transparency set, not just the image.
Tonnes of scope for user scripts here. Getting rid of the topic ratings and Likes, for a start.
userContent.css:@-moz-document domain(ukvac.com) {
.avatar img {
background-color: transparent !important;
}
}
.avatar class is already set to a transparent background. It's the child <IMG> element that I believe is incorrectly setup. That is ... it is incorrect if the xenforo settings have been set to allow avatar transparency to be turned on. If that is not turned on, then nothing is broken and it probably could be turned on without any bad mamajammas happening around here ... but ... again ... no big shakes ... like I say ... I'll just do me. 