JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/react/16.3.2/umd/react.development.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/16.3.2/umd/react-dom.development.js"></script>
<div id="app"></div>

CSS

body {
  background: #20262E;
  padding: 20px;
  font-family: Helvetica;
}

#app {
  background: #fff;
  border-radius: 4px;
  padding: 20px;
  transition: all 0.2s;
}

Babel + JSX

class Test extends React.Component {  
  static getDerivedStateFromProps({ text }) {
  	if (text) {
    	return { text } 
    }
    return null
  }
  
  constructor(props) {
    super(props)
    this.state = {
      text: props.text
    }
  }
  
  changeLang(newText) {
  	this.setState({ text: newText })
  }
  
  render() {
    return (<div>
      <input onChange={({ target }) => this.changeLang(target.value)} value={this.state.text} />
      </div>);
  }
}

class Timer extends React.Component {
  componentDidMount() {
    this.interval = setInterval(() => this.setState({}), 1000);
  }

  componentWillUnmount() {
    clearInterval(this.interval);
  }

  render() {
    return <Test text="hello " />;
  }
}

ReactDOM.render(<Timer />, document.querySelector("#app"));