body {
    font-family: 'Verdana', sans-serif;
    background-color: #eef2f3;
    margin: 0;
    padding: 0;
}

#container {
    max-width: 900px;
    margin: 20px auto;
    background-color: #ffffff;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

header {
    background-color: #4CAF50;
    color: white;
    padding: 20px;
    text-align: center;
}

nav {
    background-color: #333;
}

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

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

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

main {
    padding: 20px;
}

footer {
    background-color: #4CAF50;
    color: white;
    text-align: center;
    padding: 15px;
}