.bbp-body .hentry>li:first-child{
    padding-left:5px;

}
.bbp-body .hentry.bbppu-read>li:first-child{
    border-left:5px solid #EAEAEA;

}
.bbp-body .hentry.bbppu-unread>li:first-child{
    border-left:5px solid #21759B;
}