body {
    /*height: 100vh;
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #f0f0f0;
    */
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}
.drop-zone {
    height: 50vh;
    border: 2px dashed #ccc;
    /*
    border-radius: 10px;
    */
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    background-color: #fff;
    padding: 20px;
    margin: 20px;
    cursor: pointer;
}
.drop-zone-text {
    font-size: 30px;
    color: #aaa;
}
.drop-zone:hover {
    border-color: #aaa;
}