.acronym {
    color: #666666;
}
.footnote {
    color: #999999;
}
.black {
    color: #000000 !important;
}
.white {
    color: #ffffff !important;
}
.yellow {
    color: #DAD04C !important;
}
.registered {
    bottom: 10px;
    font-size: 0.5em;
    position: relative;
}