React.js Material-UI project not working on codepen although it's working locally
问题 the following project is working locally (I built it using create-react-app) but when moved it to codepen it's not working and it's driving me crazy (it's giving me a vague error in the console Uncaught ReferenceError: require is not defined ), any help would be appreciated: https://codepen.io/bahax/pen/ExPzbgZ?editors=0010 here's the code as suggested by SOF editor: import {Paper, Typography} from 'material-ui/core'; let styles = { leftStyles : { marginTop: '1vh', marginLeft: '1vw', width: