body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    }
    header {
    background-color: #f4f4f4;
    padding: 10px;
    text-align: center;
    }
    nav a {
    margin: 0 5px;
    text-decoration: none;
    }
    footer {
    text-align: center;
    padding: 10px;
    background-color: #f4f4f4;
    }