Cloud9 unable to understand grid properties in CSS

css

#1

While trying to use properties like ‘grid-template’, ‘grid-row gap’, etc., C9 is rendering the code as if it’s an unknown property. It’s my understanding that grid properties are supported on most, if not all, of the latest versions of browsers, including mine. Is this a known internal issue, or is the grid property just not supported on C9? Thank you for any assistance.
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Update: Just to follow up, I think I may have been a little unclear. The grid property is rendered correctly whenever I run the html file, I was just wondering why the C9 IDE is marking grid properties as errors.


#2

me too… any solution for this or alternative?


#3

Same where, where is their staff trying to help? useless!