body{background-color:#f5f5f5;justify-content:center;align-items:center;height:100vh;margin:0;font-family:Arial,sans-serif;display:flex}.container{text-align:center;background-color:#fff;border-radius:8px;width:90%;max-width:500px;padding:40px;box-shadow:0 2px 10px #0000001a}.spinner{border:4px solid #0000001a;border-top-color:#1976d2;border-radius:50%;width:40px;height:40px;margin:0 auto 20px;animation:1s linear infinite spin}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}h1{color:#333;margin-bottom:10px;font-size:24px}p{color:#666;margin-bottom:20px}.progress-container{background-color:#e0e0e0;border-radius:4px;width:100%;height:8px;margin-bottom:10px;overflow:hidden}.progress-bar{background-color:#1976d2;width:0;height:100%;transition:width .3s}