body {
                font-family: Arial, sans-serif;
                margin: 0;
                padding: 0;
            }

            img {
                max-width: 100%;
                height: auto;
                display: block;
                margin: 0 auto;
            }

            h1 {
                color: #333;
                text-align: center;
            }

            .explanation {
                max-width: 600px;
                margin: 20px auto;
                padding: 20px;
                background-color: #f9f9f9;
                border: 1px solid #ddd;
                border-radius: 5px;
            }

            p {
                color: #666;
                line-height: 1.6;
            }

            .navigation {
                max-width: 600px;
                margin: 20px auto;
                text-align: center;
            }

            .navigation a {
                text-decoration: none;
                color: #007bff;
                display: inline-block;
                margin: 10px;
                padding: 5px 10px;
                border: 1px solid #007bff;
                border-radius: 5px;
            }

            .navigation a:hover {
                background-color: #007bff;
                color: #fff;
            }

            .about-button {
                position: fixed;
                top: 20px;
                right: 20px;
                background-color: #007bff;
                color: #fff;
                padding: 10px 20px;
                border: none;
                border-radius: 5px;
                text-decoration: none;
            }