/* Header styles */
                header {
                    background-color: #f2f2f2;
                    padding: 2rem;
                    text-align: center;
                }

                header h1 {
                    color: #333;
                    font-size: 1.5rem;
                }

                nav ul {
                    list-style-type: none;
                    padding: 0;
                }

                nav ul li {
                    display: inline-block;
                    margin-right: 0.625rem;
                }

                nav ul li a {
                    text-decoration: none;
                    color: #333;
                }

                /* Main section styles */
                main {
                    display: flex;
                    flex-direction: column; /* Added */
                    align-items: center; /* Added */
                    padding: 2rem;
                    max-width: 600px; /* Updated */
                    margin: 0 auto; /* Added */
                }

                section {
                    margin-bottom: 2rem;
                }

                section h2 {
                    color: #333;
                    font-size: 1.25rem;
                    margin-bottom: 0.625rem;
                }

                section p {
                    color: #666;
                    font-size: 1rem;
                    line-height: 1.5;
                }

                section ul {
                    list-style-type: disc;
                    margin-left: 1.25rem;
                }

                /* Form styles */
                form {
                    margin-top: 0.625rem;
                }

                form label {
                    display: block;
                    margin-bottom: 0.3125rem;
                    color: #333;
                    font-size: 1rem;
                }

                form input[type="text"],
                form input[type="email"] {
                    width: 100%;
                    padding: 0.3125rem;
                    margin-bottom: 0.625rem;
                    border: 1px solid #ccc;
                    border-radius: 0.1875rem;
                }

                /* Footer styles */
                footer {
                    background-color: #f2f2f2;
                    padding: 2rem;
                    text-align: center;
                    color: #666;
                    font-size: 0.875rem;
                }

                time {
                    color: #999;
                    font-size: 0.875rem;
                }