footer {
     position: fixed;
     bottom: 25px;
     /* Abstand vom unteren Rand */
     left: 50%;
     /* horizontale Mitte */
     transform: translateX(-50%);
     font-family: 'vga', monospace;
     font-size: 14px;
     text-align: center;
     color: white;
     padding: 10px 0;
     z-index: 999;
     width: auto;
     /* nicht 100%, sonst mitwandern */
     background: transparent;
}