body {
    font-family: monospace;
}

#dropZone {
    background-color: rgba(0, 0, 0.2, 0.75);
    color: white;
    font-size: 60px;
    font-weight: bold;
    height: 100%;         
    left: 0; 
    padding: 1em;
    position: fixed;
    top: 0;
    transition: visibility 175ms, opacity 175ms;
    width: 100%;
    z-index: 999;               
}