body{font-family:Arial,sans-serif;margin:0;background:#f4f4f4;color:#222}header{background:#0b1f3a;color:#fff;padding:15px}nav a{color:#fff;margin:0 10px;text-decoration:none}.hero{background:url('bilder/luzenberg.jpg') center/cover;height:420px;display:flex;align-items:center;justify-content:center;flex-direction:column;color:#fff;text-shadow:1px 1px 4px #000}.logo{width:180px;border-radius:50%}.container{max-width:1000px;margin:auto;padding:20px}footer{background:#0b1f3a;color:#fff;padding:20px;text-align:center}