Css Improve compatibility

Need help with this one guys

https://learn.freecodecamp.org/responsive-web-design/basic-css/improve-compatibility-with-browser-fallbacks

The instructions are pretty straight forward. What have you tried?

The test says:

Your .red-box rule should include a fallback with the background set to red immediately before the existing background declaration.

Does that help?

(Note: this is to protect from the case if the variable is not working/broken)

  1. Learning this subject can be hard and frustrating, but please don’t take it out on your fellow campers.

  2. Please try searching the forum before asking the question.

  3. Use the “Ask for help” button on the assignment so we can see your code.

Background:red;

i got stuck on this too because i originally thought it had to be a variable, because we were doing variables lol