<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Show More</title>
    <style>
        body {
            font-family: Arial, sans-serif;
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            background-color: #f0f2f5;
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
        }
        .container {
            max-width: 600px;
            padding: 20px;
            background-color: white;
            border-radius: 8px;
            box-shadow: 0 2px 5px rgba(0,0,0,0.1);
            text-align: center;
        }
        .more-content {
            display: none;
            margin-top: 20px;
            text-align: left;
        }
        .show-more-btn {
            display: inline-block;
            margin-top: 10px;
            padding: 10px 20px;
            background-color: #007bff;
            color: white;
            border: none;
            border-radius: 5px;
            cursor: pointer;
        }
        .show-more-btn:hover {
            background-color: #0056b3;
        }
    </style>
</head>
<body>
    <div class="container">
        <h1>Show More Example</h1>
        <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.</p>
        <div id="moreContent" class="more-content">
            <p>Additional content that is revealed when the button is clicked. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Curabitur nec libero eu metus faucibus aliquam.</p>
        </div>
        <button class="show-more-btn" onclick="toggleContent()">Show More</button>
    </div>

    <script>
        function toggleContent() {
            const moreContent = document.getElementById('moreContent');
            const button = document.querySelector('.show-more-btn');
            if (moreContent.style.display === 'none' || moreContent.style.display === '') {
                moreContent.style.display = 'block';
                button.textContent = 'Show Less';
            } else {
                moreContent.style.display = 'none';
                button.textContent = 'Show More';
            }
        }
    </script>
</body>
</html>