body,html{margin:0;padding:0;height:100%;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Oxygen,Ubuntu,Cantarell,'Open Sans','Helvetica Neue',sans-serif;background:url('https://wallpapers.com/images/hd/1920-x-1080-nature-desktop-3an6vr1phtti9egx.jpg') no-repeat center center fixed;background-size:cover;display:flex;justify-content:center;align-items:center}.main-container{width:100%;max-width:450px;padding:20px}.card{background-color:#fff;border-radius:12px;padding:40px;box-shadow:0 4px 12px rgba(0,0,0,.1);text-align:center}h1{font-size:24px;color:#333;margin-bottom:24px}#puzzle-container{margin-top:20px}#circle{width:50px;height:50px;background-color:#007bff;border-radius:50%;cursor:grab}#square{width:100px;height:100px;background-color:#ddd;border:2px dashed #007bff;display:flex;justify-content:center;align-items:center}#verification-message{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);background-color:#007bff;padding:30px;border-radius:12px;box-shadow:0 6px 16px rgba(0,0,0,.2);text-align:center;font-size:18px;color:#fff;z-index:99999}