body {
    font-family: Arial, sans-serif;
    padding: 20px;
    background-color: #f4f4f4;
}

header h1 {
    text-align: center;
    color: #333;
}

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

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

th {
    background-color: #f2f2f2;
}