#registers table td {
    padding:3px;
    font-size:10px;
    text-align: center;
    font-weight:bold;
    font-family:monospace;
}

#registers table td:hover {
    background-color:yellow;
    cursor: crosshair;
}

.register-on {
    background-color:#dedede;
}

.register-off {
    background-color:white;
    border-color: #dedede;
    color:#dedede;
}

.error {
    color: #007700;
}