React Js Get Element by Id

<!DOCTYPE html>
<html>
<head>
  <meta charset="UTF-8">
  <script src="https://unpkg.com/react@17.0.2/umd/react.development.js"></script>
  <script src="https://unpkg.com/react-dom@17.0.2/umd/react-dom.development.js"></script>
  <script src="https://unpkg.com/@babel/standalone@7.14.7/babel.min.js"></script>
</head>
<body>
  <div id="app"></div>
  <script type="text/babel">
    const { useState } = React;
    function App() {
      const [isVisible, setIsVisible] = useState(true);

return (
        <div className='container'>
          <h3>React Js Get Element by id | Toggle Visibility </h3>
          <button onClick={handleToggleVisibility}>Toggle Visibility</button>
          <div id="myElementId" style={{ display: isVisible ? 'block' : 'none' }}>
            This is my element
          </div>
        </div>
      );
    }

ReactDOM.render(<App />, document.getElementById("app"));
  </script>
  <style>
    .container {
      text-align: center;
      margin: 50px auto;
      padding: 20px;
      width: 300px;

border-radius: 5px;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    }

h3 {
      color: #333;
    }

button {
      background-color: #007bff;
      color: #fff;
      border: none;
      padding: 10px 20px;
      border-radius: 5px;
      cursor: pointer;
      transition: background-color 0.3s ease;
    }

button:hover {
      background-color: #0056b3;
    }

#myElementId {
      margin-top: 20px;
      padding: 10px;
      background-color: #fff;
      border-radius: 5px;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    }
  </style>
</body>

</html>