* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: Arial, sans-serif;
            background-color: #121212;
            color: #ffffff;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            min-height: 100vh;
            margin: 0;
            padding: 1rem;
        }

        header {
            text-align: center;
            margin-bottom: 2rem;
        }

        header h1 {
            font-size: 2.5rem;
            margin-bottom: 0.5rem;
        }

        header p {
            font-size: 1rem;
            color: #aaaaaa;
        }

        #apod-container {
            width: 100%;
            max-width: 800px;
            border-radius: 8px;
            overflow: hidden;
            background-color: #1e1e1e;
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.5);
        }

        #apod-media {
            width: 100%;
            max-height: 400px;
        }

        iframe {
            width: 100%;
            height: 400px;
            border: none;
        }

        #apod-description {
            padding: 1.5rem;
        }

        #apod-description h2 {
            font-size: 1.5rem;
            margin-bottom: 1rem;
        }

        #apod-description p {
            line-height: 1.6;
            font-size: 1rem;
        }

        footer {
            margin-top: 2rem;
            font-size: 0.9rem;
            color: #777;
        }

        @media (max-width: 600px) {
            header h1 {
                font-size: 2rem;
            }

            #apod-description h2 {
                font-size: 1.25rem;
            }
        }