React Js Find Square Root of Number

<!DOCTYPE html>
<html>
<head>
  <meta charset="UTF-8" />
  <script src="https://cdnjs.cloudflare.com/ajax/libs/react/17.0.2/umd/react.development.js"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/17.0.2/umd/react-dom.development.js"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/babel-standalone/6.26.0/babel.min.js"></script>
</head>
<body>
  <div id="app"></div>
  <script type="text/babel">
    const { useState } = React;
    function App() {
      const [number, setNumber] = useState(400);
      const [squareRoot, setSquareRoot] = useState(0);

const calculateSquareRoot = () => {
        const sqrt = number ** 0.5;
        setSquareRoot(sqrt);
      };

return (
        <div className='container'>
          <h3 className='title'>React Js Find Square Root of Number</h3>
          <input
            type="number"
            value={number}
            onChange={(e) => setNumber(Number(e.target.value))}
            className='input'
          />
          <button onClick={calculateSquareRoot} className='button'>
            Calculate Square Root
          </button>
          <p className='result'>Square Root: {squareRoot}</p>
        </div>

);
    }

ReactDOM.render(<App />, document.getElementById("app"));
  </script>

.title {
      font-size: 24px;
      margin-bottom: 20px;
      color: #333;
    }

.input {
      padding: 10px;
      border: 1px solid #ccc;
      border-radius: 5px;
      margin: 0 0 20px;
      width: 200px;
      font-size: 16px;
      text-align: center;
    }

.button {
      padding: 10px 20px;
      background-color: #007bff;
      color: #fff;
      border: none;
      border-radius: 5px;
      font-size: 16px;
      cursor: pointer;
      transition: background-color 0.3s;
    }

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

.result {
      font-size: 18px;
      color: #333;
      margin-top: 20px;
    }
  </style>
</body>

</html>