React Js Generate OTP

<!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 [otp, setOTP] = useState("");

const generateOTP = () => {
          const digits = "0123456789";
          let OTP = "";
          for (let i = 0; i < 6; i++) {
            OTP += digits[Math.floor(Math.random() * 10)];
          }
          setOTP(OTP);
        };

return (
          <div className="container">
            <h3>React Js Generate OTP | 6 digit Otp</h3>
            <button onClick={generateOTP}>Generate OTP</button>
            <p>Generated OTP: {otp}</p>
          </div>
        );
      }
      ReactDOM.render(<App />, document.getElementById("app"));
    </script>

.container {
        max-width: 400px;
        margin: 0 auto;
        padding: 20px;

border-radius: 5px;
        box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
        font-family: Arial, sans-serif;
      }

button {
        background-color: #4caf50;
        color: white;
        border: none;
        padding: 10px 20px;
        border-radius: 5px;
        cursor: pointer;
        font-size: 16px;
        margin-bottom: 15px;
        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
        transition: background-color 0.3s ease;
      }

button:hover {
        background-color: #45a049;
      }

/* Style the OTP paragraph */
      p {
        font-size: 18px;
        font-weight: bold;
        color: #333;
      }
    </style>
  </body>
</html>