React Js Convert Celsius to Fahrenheit or Fahrenheit to Celsius

<!DOCTYPE html>
<html>

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

function App() {
            const [celsius, setCelsius] = useState('');
            const [fahrenheit, setFahrenheit] = useState('');

const handleCelsiusChange = (e) => {
                const celsiusValue = e.target.value;
                setCelsius(celsiusValue);
                const fahrenheitValue = (celsiusValue * 9) / 5 + 32;
                setFahrenheit(fahrenheitValue.toFixed(2));
            };

return (
                <div className="container">
                    <h3 className="title">React JS Convert Celsius to Fahrenheit</h3>
                    <label className="label">Celsius:</label>
                    <input className="input" type="number" value={celsius} onChange={handleCelsiusChange} />
                    <br />
                    <label className="label">Fahrenheit:</label>
                    <input className="input" type="number" value={fahrenheit} readOnly />
                </div>

);
        }

ReactDOM.render(<App />, document.getElementById("app"));
    </script>
    <style>
        .container {
            text-align: center;
            margin: 0 auto;
            width: 700px;
            box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
            display: flex;
            flex-direction: column;
            align-items: center;
        }

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

.label {
            font-weight: bold;
        }

.input {
            padding: 5px;
            margin-bottom: 10px;
            border: 1px solid #ccc;
            border-radius: 3px;
            width: 200px;
        }

.input:focus {
            outline: none;
            box-shadow: 0 0 5px rgba(0, 0, 0, 0.3);
        }
    </style>
</body>

</html>

 
<!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 [celsius, setCelsius] = useState('');
            const [fahrenheit, setFahrenheit] = useState('');
​
            const handleCelsiusChange = (e) => {
                const celsiusValue = e.target.value;
                setCelsius(celsiusValue);
                const fahrenheitValue = (celsiusValue * 9) / 5 + 32;
                setFahrenheit(fahrenheitValue.toFixed(2));
            };
​
            return (
                <div className="container">
                    <h3 className="title">React JS Convert Celsius to Fahrenheit</h3>
                    <label className="label">Celsius:</label>
                    <input className="input" type="number" value={celsius} onChange={handleCelsiusChange} />
                    <br />
                    <label className="label">Fahrenheit:</label>
                    <input className="input" type="number" value={fahrenheit} readOnly />
                </div>
​
            );
        }
​
        ReactDOM.render(<App />, document.getElementById("app"));
    </script>
    <style>
        .container {
            text-align: center;
            margin: 0 auto;
            width: 700px;
            box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
            display: flex;
            flex-direction: column;
            align-items: center;
        }
​
        .title {
            font-size: 24px;
            margin-bottom: 20px;
        }
​
        .label {
            font-weight: bold;
        }
​
        .input {
            padding: 5px;
            margin-bottom: 10px;
            border: 1px solid #ccc;
            border-radius: 3px;
            width: 200px;
        }
​
        .input:focus {
            outline: none;
            box-shadow: 0 0 5px rgba(0, 0, 0, 0.3);
        }
    </style>
</body>
​
</html>