React Js Hide Div After 5 Seconds

<!DOCTYPE html>
<html>

<body>
  <div id="app"></div>
  <script type="text/babel">
    const { useEffect } = React;

function App() {
      useEffect(() => {
        // Hide the div after 5 seconds
        const timeoutId = setTimeout(() => {
          document.getElementById("myDiv").style.display = "none";
        }, 5000); // 5000 milliseconds (5 seconds)

// Clear the timeout to prevent it from running if the component unmounts
        return () => clearTimeout(timeoutId);
      }, []);

return (
        <div className='container'>
          <h3>React Js Div Hide After 5 Seconds Method 2</h3>
          <div id="myDiv" style={{ border: '1px solid green', padding: '16px' }}>
            This Div Automatically Hides After 5 Seconds
          </div>

</div>
      );
    }
    ReactDOM.render(<App />, document.getElementById("app"));
  </script>
  <style>
    /* Container Styles */
    .container {
      margin: 20px;
      padding: 20px;
      border-radius: 5px;
      box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
      background-color: #fff;
    }
  </style>
</body>

</html>