body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f9;
}

header {
    background-color: #333;
    color: white;
    padding: 10px 0;
    text-align: center;
}

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

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

header nav ul li a {
    color: white;
    text-decoration: none;
    font-weight: bold;
}

section.intro, .cat-details {
    text-align: center;
    margin: 20px;
}

.cat-details img {
    width: 200px;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

footer {
    text-align: center;
    padding: 10px 0;
    background-color: #333;
    color: white;
}