form#upload-form {
    max-width: 600px;
    margin: 0 auto;
    padding: 2em;
    background: #fafafa;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}
#upload-form input[type="file"] {
    display: block;
    margin: 1em 0;
}
#upload-form button {
    background: #007cba;
    color: white;
    padding: 0.7em 2em;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}
#upload-form button:hover {
    background: #005a91;
}