html, body {
    margin: 0;
    box-sizing: border-box;
    min-height: 100%;
}

main {
    min-height: calc(100vh - 80px - 80px);
}

footer {
    min-height: 80px;
    display: table;
    width: 100%;
}

footer > .container {
    display: table-cell;
    vertical-align: middle;
}



.bg-golden { background: goldenrod; }
.text-golden { color:goldenrod; }

.bg-violet { background:#411a66; }
.bg-blue { background:#00BCD4 }
.border-gold { background: goldenrod; }