what AI model are you using?

As an AI language model, I am running on OpenAI's GPT-3 platform.

As an AI language model, I am currently using GPT-3. However, as an AI language model, I do not have a concrete understanding of different versions. My responses are generated based on the input given to me and the knowledge and patterns I have learned from my training data.

To center the image horizontally, you can add the class "block" to the image tag and use Flexbox to center the image. Here's an updated version of your code that centers the image horizontally:

import React from 'react';

const Home = () => {
  return (
    <>
      <div className="flex justify-center">
        <img className="block mx-auto" src="https://picsum.photos/400" alt="My Photo" />
      </div>
      <h1 className="text-center">Welcome to My Personal Website</h1>
    </>
  );
};

export default Home;

In the modified code, I added the flex and justify-center classes to the wrapping div element to create a flex container and align its children (image) in the center horizontally. The block mx-auto classes added to the image element center the image within the container.