Reactjs video #3: Navigation Header using scss and react-router-dom

import React from 'react';
import {BrowserRouter as Router, Switch, Route, Link} from 'react-router-dom';
import Home from './components/Home';
import Users from './components/Users/Users';

import './App.css';
import Header from './components/Header/Header';
import Contact from './components/Contacts/Contact';
import About from './components/About/About';

const App = () => {
  return (
    <Router>
      <Header></Header>
      <Switch>
        <Route path="/home" component={Home} />
        <Route path="/users" component={Users} />
        <Route path="/contact" component={Contact} />
        <Route path="/about" component={About} />
      </Switch>
    </Router>
  );
};

export default App;

body {
  margin: 0px;
  padding: 0px;
}

.header-wrapper {
  display: flex;
  justify-content: space-between;
  position: relative;
  padding: 2rem;
  font-size: 15px;
  background-color: #3f3d56;
  border: 1px solid #ccc;
  box-sizing: 0 2px 2px rgba(black, 0.2);
  flex-direction: row;
  text-align: center;
  align-items: center;
  color: #fff;

  .logo {
    .brand {
      color: #fff;
      text-decoration: none;
    }
  }

  .nav-wrapper {
    .navigation,
    .navigation a,
    .navigation a:hover,
    .navigation a:focus {
      color: #fff;
      padding: 5px 10px;
      text-decoration: none;
    }
  }
}

.activeClass {
  border-bottom: 1px solid red;
}

import React from 'react';
import {NavLink} from 'react-router-dom';

const Header = () => {
  return (
    <nav className="header-wrapper">
      <div className="logo">
        <NavLink to="/" className="brand">
          Hemant's Website
        </NavLink>
      </div>
      <div className="nav-wrapper">
        <div className="navigation">
          <NavLink to="/about" activeClassName="activeClass">
            About
          </NavLink>
          <NavLink to="/contact" activeClassName="activeClass">
            Contact
          </NavLink>
          <NavLink to="/users" activeClassName="activeClass">
            Users
          </NavLink>
        </div>
      </div>
    </nav>
  );
};

export default Header;

{
  "presets": ["@babel/preset-env", "@babel/preset-react"],
  "env": {
    "test": {
      "plugins": ["@babel/plugin-transform-modules-commonjs"]
    }
  },
  "plugins": ["@babel/plugin-proposal-object-rest-spread"]
}

const path = require('path');

module.exports = {
  entry: './src/index.js',
  output: {
    path: path.resolve('dist'),
    filename: 'main.js',
  },
  module: {
    rules: [
      {test: /\.js?$/, loader: 'babel-loader', exclude: /node_modules/},
      {test: /\.css$/i, use: ['style-loader', 'css-loader']},
      {
        test: /\.svg$/i,
        use: [{loader: 'file-loader', options: {esModule: false}}],
      },
    ],
  },
};