body {
    font-family: Arial, sans-serif;
    background-color: #f8f9fa;
    text-align: center;
    padding: 40px;
}

.container {
    background: white;
    padding: 30px;
    border-radius: 10px;
    display: inline-block;
    box-shadow: 0px 0px 20px #ccc;
}

input[type="file"] {
    margin-top: 10px;
}

button {
    padding: 10px 20px;
    font-size: 16px;
    background: #28a745;
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
}

.explanation-box {
    margin-top: 30px;
    padding: 15px;
    background: #e8f5e9;
    border-left: 5px solid #2e7d32;
    border-radius: 8px;
    text-align: left;
    display: inline-block;
    max-width: 600px;
}