Your task is to generate the following CSS classes:
- .container-1,
- .container-2,
- .container-3,
- .container-4.
You'll find a link to boilerplate files here to help get you started. There is a list of colors in the challenge2.scss file. Each of those classes should have one of the colors from the list set as a value for the background-color property. Use any of the loops you want!