body {
    font-family: Arial, sans-serif;
    background-color: #f2f6fc;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 800px;
    margin: 40px auto;
    padding: 30px;
    background-color: #ffffff;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

h2 {
    text-align: center;
    color: #333;
    margin-bottom: 20px;
}

form label {
    display: block;
    margin-top: 15px;
    font-weight: 500;
    color: #444;
}

form input[type="number"] {
    width: 100%;
    padding: 8px 10px;
    margin-top: 5px;
    border: 1px solid #ccc;
    border-radius: 6px;
    font-size: 14px;
}

form button {
    margin-top: 25px;
    background-color: #007BFF;
    color: white;
    padding: 12px 20px;
    border: none;
    border-radius: 6px;
    font-size: 16px;
    cursor: pointer;
    width: 100%;
    transition: background-color 0.3s ease;
}

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