body{margin:0;font-family:sans-serif;background:#f2f2f2;color:#2f2f2f;}header{background:#009688;padding:15px 40px;display:flex;justify-content:space-between;color:white;position:fixed;width:100%;top:0;z-index:10;}nav a{margin-left:20px;text-decoration:none;color:#fff}.section{padding:120px 40px 60px;}h2{color:#006d63}.projects-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px}.project-card{background:white;padding:20px;border-radius:10px}.gallery img{width:100%;border-radius:8px;margin-top:10px}.button{background:#009688;padding:12px 22px;border-radius:8px;color:white;text-decoration:none}