body {
    font-family: Arial, sans-serif;
    background-color: lightgray;
    margin: 20px;
}

header {
    background-color: darkgray;
    padding: 15px;
    text-align: center;
}

nav {
    background-color: gray;
    padding: 10px;
    text-align: center;
}

nav a {
    color: white;
    margin: 10px;
    text-decoration: none;
}

section {
    background-color: white;
    padding: 15px;
    margin-bottom: 20px;
    border: 1px solid gray;
}

figure {
    margin: 10px;
}

figcaption {
    margin-bottom: 10px;
}

footer {
    background-color: darkgray;
    padding: 15px;
    text-align: center;
    margin-top: 20px;
}