My CSS for them:
.bbpress .forum-titles .bbp-forum-reply-count, .bbpress .forum-titles .bbp-forum-topic-count, .bbpress .forum-titles .bbp-topic-reply-count, .bbpress .forum-titles .bbp-topic-voice-count {
font-size: 0!important;
overflow: hidden;
}
.bbpress .forum-titles .bbp-forum-reply-count::before {
padding-left: .3em;
}
.bbpress .forum-titles .bbp-forum-reply-count::before, .bbpress .forum-titles .bbp-forum-topic-count::before, .bbpress .forum-titles .bbp-topic-reply-count::before, .bbpress .forum-titles .bbp-topic-voice-count::before {
font: 400 16px/1 dashicons;
margin-right: 100px;
text-shadow: 2px 2px 2px #a9a9a9;
}
.bbpress .forum-titles .bbp-forum-topic-count::before {
content: “\f123”}
.bbpress .forum-titles .bbp-topic-voice-count::before {
content: “\f307”}
.bbpress .forum-titles .bbp-forum-reply-count::before, .bbpress .forum-titles .bbp-topic-reply-count::before {
content: “\f125”}
/* texts after */
#aiheet:hover::after, #kirjoittajat:hover::after, #viestit:hover::after, .bbpress .forum-titles .bbp-forum-reply-count:hover::after, .bbpress .forum-titles .bbp-forum-topic-count:hover::after, .bbpress .forum-titles .bbp-topic-reply-count:hover::after, .bbpress .forum-titles .bbp-topic-voice-count:hover::after {
color: #fff;
background-color: #333;
padding: 3px;
font-size: 10px;
display: block;
z-index: 2;
white-space: pre;
text-align: left;
border-radius: 7%;
-webkit-border-radius: 7%}
#aiheet:hover::after, #kirjoittajat:hover::after, #viestit:hover::after {
position: absolute;
top: 35px;
left: -30px;
}
#aiheet:hover::after, .bbpress .forum-titles .bbp-forum-topic-count:hover::after {
content: ‘Aiheet’} /* topics*/
#kirjoittajat:hover::after, .bbpress .forum-titles .bbp-topic-voice-count:hover::after {
content: “Kirjoittajat”} /*authors*/
#viestit:hover::after, .bbpress .forum-titles .bbp-forum-reply-count:hover::after, .bbpress .forum-titles .bbp-topic-reply-count:hover::after {
content: “Viestit”} /*comments/messages*/
16px is for small decices:others
@media screen and (min-width: 321px) {
.bbpress .forum-titles .bbp-forum-topic-count::before,
.bbpress .forum-titles .bbp-forum-reply-count::before,
.bbpress .forum-titles .bbp-topic-voice-count::before,
.bbpress .forum-titles .bbp-topic-reply-count::before {
font: 400 21px/1 dashicons;
margin-left: 20px;
}
}