body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
}

header {
    background-color: #333;
    color: #fff;
    padding: 10px 0;
    text-align: center;
}

nav ul {
    list-style-type: none;
    padding: 0;
}

nav ul li {
    background-color: #fff;
    margin: 5px 0;
    padding: 10px;
    border-radius: 5px;
}

nav ul li a {
    text-decoration: none;
    color: #333;
}

nav ul li a:hover {
    color: #0056b3;
}

footer {
    background-color: #333;
    color: #fff;
    text-align: center;
    padding: 10px 0;
    position: fixed;
    width: 100%;
    bottom: 0;
}