body{margin:0;font-family:Arial,sans-serif;line-height:1.6}nav{background:#355c4a;padding:12px;text-align:center}nav a{color:#fff;margin:0 10px;text-decoration:none}.hero{height:70vh;background:url('bilder/Haus-Titelbild.jpg') center/cover}.overlay{height:100%;background:rgba(0,0,0,.45);display:flex;flex-direction:column;justify-content:center;align-items:center;color:#fff;text-align:center}.btn{background:#fff;color:#355c4a;padding:10px 18px;text-decoration:none;border-radius:4px}section{max-width:1100px;margin:auto;padding:40px 20px}.gallery{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:12px}.gallery img{width:100%;height:220px;object-fit:cover;border-radius:8px}input,textarea{width:100%;padding:10px;margin:6px 0}button{padding:10px 18px}footer{background:#222;color:#fff;padding:20px;text-align:center}footer a{color:#fff}