body {
    font-family: Arial, sans-serif;
    margin: 20px;
}

h1 {
    text-align: center;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}

th, td {
    padding: 10px;
    text-align: center;
    border: 1px solid #ddd;
}

th {
    background-color: #f4f4f4;
}

input[type="number"] {
    width: 50px;
    text-align: center;
}

button {
    padding: 5px 10px;
    border: none;
    background-color: #007BFF;
    color: white;
    cursor: pointer;
}

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

a {
    display: block;
    text-align: center;
    margin-top: 20px;
    font-size: 18px;
    text-decoration: none;
    color: #007BFF;
}

a:hover {
    text-decoration: underline;
}