Play Tetris Online - Simple HTML Game

<h1>Simple HTML Tetris Game</h1>
<p>Play a classic game of Tetris right in your browser! This simple HTML version lets you experience the fun of fitting blocks together to clear lines and achieve the highest score.</p>
<h2>How to Play</h2>
<ol>
<li>Use the 'left' and 'right' arrow keys to move the tetromino left and right.</li>
<li>Use the 'up' arrow key to rotate the tetromino.</li>
<li>Use the 'down' arrow key to move the tetromino down faster.</li>
<li>Try to fit the tetrominos together to create a complete row.</li>
<li>When you complete a row, it will disappear, and you will receive points.</li>
</ol>
<h2>Game Controls</h2>
<ul>
<li><strong>Left Arrow Key:</strong> Move Tetromino Left</li>
<li><strong>Right Arrow Key:</strong> Move Tetromino Right</li>
<li><strong>Up Arrow Key:</strong> Rotate Tetromino</li>
<li><strong>Down Arrow Key:</strong> Move Tetromino Down Faster</li>
</ul>
<h2>Game Over</h2>
<p>The game is over when the tetrominos stack up to the top of the game board.</p>
<h2>Start Playing</h2>
<p>Click on the button below to start playing.</p>
<p><button onclick="startGame()">Start Game</button></p>
<script>
    function startGame() {
        // code for starting the game goes here
    }
</script>