.drop-area {
    text-align: center;
    border: 2px dashed gray;
    width: 100%;
    height: 5em;
    vertical-align: middle;
}

.drop-area span {
    margin-top: 2em;
    display: none;
}

.drop-area.upload span.upload {
    display: inline-block !important;
}

.drop-area.dragover span.dragover {
    display: inline-block !important;
}