import React, { Component } from 'react' export default class Navbar extends Component { render() { return ( <div> <nav className="navbar navbar-expand-lg navbar-dark bg-dark"> <a className="navbar-brand" href="/">BMI Calculator App</a> <button className="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation"> <span className="navbar-toggler-icon"></span> </button> </nav> </div> ) } }