/* styles.css */
body {
    font-family: Arial, sans-serif;
}

header, nav, .banner, .services, .portfolio, .testimonials, .about-us, .newsletter, .contact, footer {
    padding: 20px;
}

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

nav ul li {
    display: inline-block;
    margin-right: 10px;
}

.banner h2 {
    font-size: 2em;
}

.service, blockquote {
    margin-bottom: 20px;
}

/* ... additional styles as needed ... */