body {
    font-family: Arial, sans-serif;
    background-color: #eee;
    color: #000;
}

header, footer {
    background-color: #ccc;
    padding: 10px;
}

main {
    background-color: #fff;
    padding: 15px;
    margin: 15px;
}

nav a {
    margin-right: 10px;
    text-decoration: none;
    color: #000;
}

nav a:hover {
    text-decoration: underline;
}

button {
    padding: 5px 10px;
}