css does not have class code example

Example 1: cannot add a child that doesn't have a yoganode touchablehighlight

function MyComponent(props) {
  return (
    
      My Component
    
  );
}

 alert('Pressed!')}>
  
;

Example 2: why does my react project dosent have any class

import React, {Component} from 'react';
import logo from './logo.svg';
import './App.css';

class App extends Component {
  render() {
    return (
      

        

          
          

            Edit src/App.js and save to reload.
          
          
            Learn React
          
        
      
    );
  }
}
export default App;