Improve Compatibility with Browser Fallbacks - Still Stuck

Hi Free Code Camp Community - unfortunately I am stuck and the hint is not working for this activity. When you have a moment, please give some insights to help complete this activity with success. Thanks!

:root { --red-color: red; } .red-box { background-color: red; background: var(--red-color); height: 200px; width:200px; }
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Your browser information:

User Agent is: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/72.0.3626.121 Safari/537.36.

You need three backticks on their own line above your code and three backticks on their own line below your code to format it correctly. Your whole code pulse the link to the challenge would also be greatly useful.

But I think the issue here is that the challenge expects you to use the shorthand background like it is used in the already existing rule, instead of background-color