body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
}

nav ul {
    list-style-type: none;
    background-color: #444;
    padding: 10px 0;
    margin: 0;
    display: flex;
    justify-content: center;
}

nav ul li {
    margin: 0 15px;
}

nav ul li a {
    color: #fff;
    text-decoration: none;
}