body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
}

header {
    background-color: #8B0000;
    color: white;
    text-align: center;
    padding: 20px;
}

#logo {
    max-width: 150px;
}

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

nav ul li {
    display: inline;
    margin: 0 15px;
}

nav a {
    color: white;
    text-decoration: none;
    font-size: 18px;
}

section {
    padding: 20px;
}

.imagenes img, .tema img {
    width: 200px;
    height: auto;
    margin: 10px;
}

footer {
    text-align: center;
    background-color: #8B0000;
    color: white;
    padding: 10px;
}