body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f5f5f5;
}

header, footer {
    background-color: #333;
    color: white;
    text-align: center;
    padding: 1em 0;
}

main {
    padding: 20px;
}

.dropzone {
    width: 300px;
    height: 200px;
    border: 2px dashed #007bff;
    border-radius: 5px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 16px;
    color: #007bff;
    margin: 20px auto;
    cursor: pointer;
}

.dropzone.hover {
    border-color: #0056b3;
    color: #0056b3;
}