body{margin:0;font-family:Arial}nav{display:flex;justify-content:space-between;background:#1E3A8A;color:#fff;padding:15px}ul{display:flex;gap:15px;list-style:none}.hero{height:70vh;position:relative}.slide{position:absolute;inset:0;background-size:cover;background-position:center;display:none;align-items:center;justify-content:center;color:#fff;font-size:2em;text-shadow:2px 2px 4px #000}.active{display:flex}section{padding:40px}input,textarea{display:block;width:100%;max-width:500px;margin:10px 0;padding:10px}button{background:#2563EB;color:#fff;border:0;padding:10px 20px}@media(max-width:768px){nav{flex-direction:column}ul{flex-direction:column}}