nav ul {
    list-style-type: none;
    padding: 0;
    background-color: #333;
}

nav ul li {
    display: inline;
    margin-right: 20px;
}

nav ul li a {
    color: white;
    text-decoration: none;
    padding: 10px;
    background-color: #333;
}

nav ul li a:hover {
    background-color: #555;
}