React Js Radio Button Validation

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/react/17.0.2/umd/react.production.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/17.0.2/umd/react-dom.production.min.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, useEffect } = React

function App() {
            const [selectedOption, setSelectedOption] = useState('');
            const [error, setError] = useState('');

const handleOptionChange = (event) => {
                setSelectedOption(event.target.value);
                setError('');
            };

const handleSubmit = (event) => {
                event.preventDefault();

if (selectedOption === '') {
                    setError('Please select an option');
                } else {
                    alert('Successfully submitted')
                    // Perform further actions with the selected option
                }
            };

return (
                <div className='container'>
                    <h3>React Js Radio Button Validation</h3>
                    <form onSubmit={handleSubmit}>
                        <div>
                            <input
                                type="radio"
                                id="option1"
                                value="option1"
                                checked={selectedOption === 'option1'}
                                onChange={handleOptionChange}
                            />
                            <label htmlFor="option1">Option 1</label>
                        </div>
                        <div>
                            <input
                                type="radio"
                                id="option2"
                                value="option2"
                                checked={selectedOption === 'option2'}
                                onChange={handleOptionChange}
                            />
                            <label htmlFor="option2">Option 2</label>
                        </div>
                        <div>
                            <input
                                type="radio"
                                id="option3"
                                value="option3"
                                checked={selectedOption === 'option3'}
                                onChange={handleOptionChange}
                            />
                            <label htmlFor="option3">Option 3</label>
                        </div>
                        {error && <div style={{ color: 'red' }}>{error}</div>}
                        <button type="submit">Submit</button>
                    </form>
                    
                </div>
            );
        }

ReactDOM.render(<App />, document.getElementById("app"));
    </script>
    <style>
        * {
            box-sizing: border-box;
        }

.container {
            margin: 0 auto;
            width: 600px;
            text-align: center;
            box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.12), 0 2px 4px 0 rgba(0, 0, 0, 0.24);
            padding: 20px;
        }

h3 {
            text-align: center;
            margin-bottom: 20px;
        }

form {
            display: flex;
            flex-direction: column;
        }

div {
            margin-bottom: 10px;
        }

input[type="radio"] {
            margin-right: 10px;
        }

label {
            font-weight: 500;
        }

button[type="submit"] {
            background-color: #4caf50;
            color: white;
            padding: 10px 20px;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            font-size: 16px;
        }

button[type="submit"]:hover {
            background-color: #45a049;
        }

div.error {
            color: red;
            margin-top: 10px;
        }
    </style>
</body>

</html>