It looks like a variable is being used to set the background color of the .red-box class. Let’s improve our browser compatibility by adding another background declaration right before the existing declaration and set its value to red.
I’ll ask again. What is the property that you are supposed to provide a value for? What is the actual name of the property? What is the name of the property that you added?
This is the only challenge in the Responsive Web Design Certification that i have not passed including the 5 projects. So it will not give me a certificate. What am i missing?