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Sehui Park2,518 Points
doesn't show anything on challenge preview.
I am trying the challenge "Select the class .column and use the flex item property and value that will expand the columns to fill the space of the row."
In the preview, it shows white screen by default. Is it a bug ?
Chris Adamson132,143 Points
I've found this to be a common issue where things don't show up in preview; its not exclusive to the challenge you are working on.