body {
    font-family: Arial, sans-serif;
    text-align: center;
    padding: 20px;
}
table {
    border-collapse: collapse;
    width: 60%;
    margin: 20px auto;
}
th, td {
    border: 1px solid #ddd;
    padding: 12px 15px;
    text-align: center;
}
th {
    background-color: #f4f4f4;
    font-weight: bold;
}
tr:nth-child(even) {
    background-color: #fafafa;
}
h2 {
    text-align: center;
}