.gold{
    border-width: 4px;
    border-color: gold;
    border-style: double;
}

.silver{
    border-width: 4px;
    border-color: #989494;
    border-style: double;
}

.copper{
    border-width: 4px;
    border-color: #bf8970;
    border-style: double;
}