body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f0f0f0;
}

header {
    background-color: #333;
    color: white;
    padding: 1em;
    text-align: center;
}

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

nav ul li {
    display: inline;
    margin-right: 1em;
}

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

main {
    padding: 2em;
    background-color: white;
}

footer {
    text-align: center;
    padding: 1em;
    background-color: #333;
    color: white;
    position: absolute;
    width: 100%;
    bottom: 0;
}

img.limited-size {
    max-width: 50%;
    height: auto;
    width: 400px; /* or any other width you prefer */
}