Now a little challenge to check your understanding on the concept of multiple classes :

Have a look at the index.html code on the left, as well as the code of the style.css

You will see that there are many classes declared in the CSS like $.$normal$-$orange$-$right or $.$big$-$blue$-$left $...$

You are asked to simplify all this and use multiple classes in the HTML and CSS $($like in section $5).$

Every class should have one function and you should use multiple classes on the in the html$.$

The end result must be exactly the same as now $($see left bottom window for the preview$)$

And here is a screenshot of it just in case :