header, footer {
    background: #222;
    color: #f5f5f5;
    padding: 20px 0;
    text-align: center;
}
nav a {
    color: #00bcd4;
    margin: 0 10px;
    text-decoration: none;
}
nav a:hover {
    color: #ff4081;
}
section {
    padding: 60px 20px;
    max-width: 900px;
    margin: 0 auto;
}
.cta-btn {
    background: #00bcd4;
    color: #181818;
    padding: 12px 30px;
    border-radius: 4px;
    text-decoration: none;
    font-weight: bold;
    transition: background 0.2s;
}
.cta-btn:hover {
    background: #ff4081;
    color: #fff;
}
blockquote {
    background: #222;
    border-left: 4px solid #00bcd4;
    margin: 20px 0;
    padding: 20px;
    color: #f5f5f5;
}
.social-media a {
    margin-right: 10px;
    color: #00bcd4;
}
.social-media a:hover {
    color: #ff4081;
}