In the previous chapter, we explored the basics of JSX. Now, let's dive deeper and learn how to create more complex JSX elements.

## The Rule of a Single Parent Element
One important rule when working with nested JSX is that it must return a single parent element. This parent element wraps all the other levels of nested elements. This rule ensures that React can properly render and manage the structure of your JSX.
**Here's a practical example to illustrate this rule:**

### Valid JSX:
```jsx
<div>
  <h1>Welcome to My Website</h1>
  <p>Explore amazing content:</p>
  <ul>
    <li>Article 1</li>
    <li>Article 2</li>
    <li>Article 3</li>
  </ul>
</div>
```

### Invalid JSX (Won't Transpile):
```jsx
<h1>Welcome to My Website</h1>
<p>Explore amazing content:</p>
<ul>
  <li>Article 1</li>
  <li>Article 2</li>
  <li>Article 3</li>
</ul>
```

> Note
>
> When rendering multiple elements like this, we can wrap them all in parentheses `()` for clarity, but it's not strictly required. Also, remember that this concept applies when we return JSX elements in React components.

### Example
```jsx
const JSX = (
  <div>
    <h1>Welcome to My Website</h1>
    <p>Explore amazing content:</p>
    <ul>
      <li>Article 1</li>
      <li>Article 2</li>
      <li>Article 3</li>
    </ul>
  </div>
);
```

When working with nested JSX, what is the rule regarding the number of parent elements?

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Creating Complex JSX Elements

The Rule of a Single Parent Element

Valid JSX:

Invalid JSX (Won't Transpile):

Example