body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f9;
    margin: 0;
    padding: 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.container {
    background-color: #fff;
    padding: 20px 40px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    text-align: center;
    max-width: 500px;
    width: 100%;
}

.file-input {
    margin: 15px 0;
    text-align: left;
}

label {
    display: block;
    font-weight: bold;
    margin-bottom: 5px;
}

button {
    margin-top: 20px;
    padding: 10px 20px;
    font-size: 16px;
    color: #fff;
    background-color: #007BFF;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

button:hover {
    background-color: #0056b3;
}