.bbp-voting {
    margin: 16px 0 8px;
}
.bbp-voting .score {
    font-size: 25px;
    font-weight: bold;
    text-align: center;
    color: #858c93;
}
.bbp-voting a.vote {
    display: block;
    text-indent: -9999em;
    overflow: hidden;
    width: 0; 
    height: 0; 
    margin: 3px auto;
    border-left: 15px solid transparent;
    border-right: 15px solid transparent;
}
.bbp-voting a.vote.up {
    border-bottom: 15px solid #858c93;
}
.bbp-voting a.vote.down {
    border-top: 15px solid #858c93;
}