#upload {
    display: block;
    width: 100%;
    height: 20%;
    border: 3px dashed gray;
}

button {
    width: 100%;
    height: 4vh;
}

.error {
    color: orangered;
    font-size: 1.2em;
    padding-bottom: 13px;
}

.last-updated {
  font-style: italic;
  text-align: right;
}