body {
    margin: 0;
    font-family: Arial, sans-serif;
    background-color: #1e1e2f;
    color: white;
}

header {
    background-color: #123456;
    padding: 1rem;
}

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

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

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

main {
    padding: 20px;
}

footer {
    text-align: center;
    padding: 10px;
    background-color: #123456;
}