body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
    align-items : center;
}
h1 {
    color: #333;
    text-align: center;
    padding: 20px 0;
}
header {
    background-color: #333;
    padding: 30px 0;
    text-align: center;
}

href {
    color: white;
    text-decoration: none;
    margin: 0 15px;
    font-size: 18px;
}