The posts from the preceding picture have not been designed yet. I have already added CSS classes to the HTML our component returns.

Instead of using CSS to make our posts look better, another method is to use CSS-in-JS using packages such as styled-components, which is a React package. Other alternatives include Glamorous and Radium, for example. There are numerous reasons why we do not switch to such a workflow and stay with good old CSS. With those other tools, you are not able to use SASS, SCSS, or LESS effectively. Personally, I need to work with other people, such as screen and graphics designers, who can provide and use CSS, but do not program styled-components. There is always a prototype or existing CSS that can be used, so why should I spend time translating this to styled-components CSS when I could just continue with standard CSS?

There is no right or wrong option here; you are free to implement the styling in any way you like. However, in this book, we keep using good old CSS.

What we've already done in our webpack.client.config.js file is to specify a CSS rule, as you can see in the following code snippet:

{
  test: /.css$/,
  use: ['style-loader', 'css-loader'],
},

The style-loader injects your bundled CSS right into the DOM. The css-loader will resolve all import or url occurrences in your CSS code.

Create a style.css file in /assets/css and fill in the following:

body {
  background-color: #f6f7f9;
  margin: 0;
  font-family: 'Courier New', Courier, monospace
}
p {
  margin-bottom: 0;
}
.container {
  max-width: 500px;
  margin: 70px auto 0 auto;
}
.feed {
  background-color: #bbb;
  padding: 3px;
  margin-top: 20px;
}
.post {
  background-color: #fff;
  margin: 5px;
}
.post .header {
  height: 60px;
}
.post .header > * {
  display: inline-block;
  vertical-align: middle;
}
.post .header img {
  width: 50px;
  height: 50px;
  margin: 5px;
}
.post .header h2 {
  color: #333;
  font-size: 24px;
  margin: 0 0 0 5px;
}
.post p.content {
  margin: 5px;
  padding: 5px;
  min-height: 50px;
}

Refreshing your browser leaves you with the same old HTML as before.

This problem happens because webpack is a module bundler and does not know anything about CSS; it only knows JavaScript. We must import the CSS file somewhere in our code.

Instead of using index.html and adding a head tag, we can use webpack and our CSS rule to load it right in App.js. This solution is very convenient, since all of the required CSS throughout our application gets minified and bundled. Webpack automates this process.

In your App.js file, add the following behind the React import statement:

import '../../assets/css/style.css';

Webpack magically rebuilds our bundle and refreshes our browser tab.

You have now successfully rendered fake data via React and styled it with bundled CSS from webpack. It should look something like this:

The output looks very good already.