#pdf-dropzone {
    min-height: 50px;
    max-height: 150px;
    height: 150px;
    border: 0.1em solid darkgray;
    border-radius: 1em;
    padding-top:60px;
    text-align: center;
}
#pdf-dropzone:hover {
    cursor: pointer;
    border: 0.2em solid darkslategray;
}