body {
    font-family: Arial, sans-serif;
    margin: 20px;
    background-color: #f4f4f4;
    text-align: center;
}

h2 {
    color: #333;
}

table {
    width: 80%;
    margin: auto;
    border-collapse: collapse;
    background: #fff;
}

table, th, td {
    border: 1px solid #ddd;
}

th, td {
    padding: 10px;
    text-align: center;
}

th {
    background-color: #007BFF;
    color: white;
}

tr:nth-child(even) {
    background-color: #f2f2f2;
}