body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    text-align: center;
	max-width: 1000px;
}

header {
    background-color: #4CAF50;
    color: white;
    padding: 20px;
}

main {
    padding: 20px;
}

.image-section img {
    max-width: 100%;
    height: auto;
}

.audio-section, .video-section {
    margin-top: 20px;
}

@media (max-width: 1000px) {
    body {
        font-size: 14px;
    }
}