Tutorial suggesting adding an existed CSS

In Flexbox tutorial it is requested to:

Also, add the following declaration to your <article> rule:

flex: 200px;

However this CSS already exist, as can be seen in the file in github.
Either we should remove the request to add from the tutorial, or remove this predefind css from the file. I think the intention was the latter option. @chrisdavidmills

Good spot @aviv.mu. I’ve removed this line from the starter file.