body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 20px;
    background-color: #f9f9f9;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

h1 {
    text-align: center;
    color: #333;
    margin-bottom: 30px;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
    background-color: white;
}

th, td {
    border: 1px solid #ddd;
    padding: 12px;
    text-align: center;
}

th {
    background-color: #f2f2f2;
    font-weight: bold;
}

input[type="number"] {
    width: 80px;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
    text-align: center;
}

button {
    background-color: #4CAF50;
    color: white;
    padding: 12px 24px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
    display: block;
    margin: 20px auto;
    transition: background-color 0.3s;
}

button:hover {
    background-color: #45a049;
}

.result {
    font-size: 1.2em;
    font-weight: bold;
    margin-top: 20px;
    text-align: center;
    color: #333;
}

@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    table {
        font-size: 14px;
    }
    
    input[type="number"] {
        width: 60px;
    }
}