*{margin:0;padding:0;box-sizing:border-box}body{margin:0}.error-container{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;padding:2rem;text-align:center;background:#f8f9fa}.error-container h2{color:#dc3545;margin-bottom:1.6rem;font-size:2.4rem}.error-container p{color:#6c757d;margin-bottom:2.4rem;font-size:1.6rem}.error-container button{padding:1.2rem 2.4rem;background:#007bff;color:#fff;border:none;border-radius:.6rem;font-size:1.6rem;cursor:pointer;transition:background-color .3s}.error-container button:hover{background:#0056b3}