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Learning to describe the bugs or issues you’re facing is a great skill to have in a developer, it may seem hard at first, but you should at least provide a brief summary of what you are trying to accomplish and what’s the error that shows up when you try to run your code.
It will also make it easier for others to help you if they know the problem beforehand.
In this particular problem, the tests aren’t passing because you are using two different CSS style rules to change the given properties of the body element.
In most programming languages, the curly braces {} are used to group two more statement together to form a code block. for example, if i wanted to change the background color as well as font-size of button elements present in my HTML, i can do something like this: