.hero{background:url(https://c4.wallpaperflare.com/wallpaper/298/543/773/cliff-sigiriya-sri-lanka-ancient-wallpaper-preview.jpg) no-repeat 50%;background-size:cover;height:60vh;color:#fff;display:flex;align-items:center;justify-content:center;text-align:center;overflow:hidden;animation:moveBackground 30s linear infinite}.hero-content{max-width:600px;background-color:#1f2937;padding:10px;border-radius:5px}.btn-primary{background:#0070f3;color:#fff;padding:.5rem 1rem;text-decoration:none;border-radius:5px}@keyframes moveBackground{0%{background-position:0 0}to{background-position:100% 100%}}