Oops, try again. Did you remember to give your div a height of 50px? It looks like it's 50.33334000000001px

My code was correct but I got this error info. I switched from FF to Chrome and all went well.
Is codecademy not compatible with FF?

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px changed when the zoom is not 100%. If you where to set your zoom to 100% (ctrl + 0) , it works in FF as well

Many thanks! :smile: