React Js Concat Classname

<!DOCTYPE html>
<html>

<body>
    <div id="app"></div>
    <script type="text/babel">
        function App() {
            const isEnabled = true;
            const isChecked = false;

return (
                <div className='container'>
                    <h3>React Js Concat classname</h3>
                    <div className={`${isEnabled ? 'enabled' : ''} ${isChecked ? 'checked' : ''}`}>
                        Font Awesome Icons
                    </div>
                </div>
            );
        }

ReactDOM.render(<App />, document.getElementById('app'));
    </script>
    <style>
        .container {
            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);
            width: 600px;
            margin: 0 auto;
            padding: 20px;
        }

.enabled {
            color: green;
            font-weight: bold;
        }

.checked {
            text-decoration: line-through;
        }
    </style>
</body>

</html>