This HTML file contains a complete Flappy Bird clone game with the following features:

1. A 300x300 pixel game area
2. A bird that flies higher when the space key is pressed and held
3. Obstacles that scroll from right to left
4. A score counter in the top-right corner
5. A health system where the bird can take 3 hits before the game ends
6. A welcome screen with a start button
7. A game over screen with a retry button
8. Aesthetic styling using Tailwind CSS

To play the game:

1. Open the HTML file in a web browser
2. Click the "Start Game" button on the welcome screen
3. Press and hold the space key to make the bird fly higher
4. Avoid obstacles as they scroll from right to left
5. The game ends when the bird's health reaches zero
6. Click the "Retry" button to play again

The game uses Tailwind CSS for styling, which is loaded from a CDN. The entire game logic is contained within the <script> tag at the end of the file.

This HTML file creates a complete Flappy Bird-style game with the following features:

1. A 300x300 pixel game area
2. A bird that flies higher when the space key is pressed and held
3. Obstacles that scroll from right to left
4. A score counter in the top-right corner
5. A health system where the bird can take 3 hits before the game ends
6. A welcome screen with a start button
7. A game over screen with a retry button
8. Aesthetic styling using Tailwind CSS

To play the game, simply save this HTML content to a file with a .html extension and open it in a web browser. Click the "Start Game" button to begin, and use the space bar to control the bird's flight. Avoid the green obstacles, and try to survive as long as possible while racking up points!