Styling "Tables" App for Terra Firma

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http://www.smartwebprojects.net/concrete5-blog/241/styling-tables-in-concrete5/

I went to the site above after purchasing the Tables block. I want my table to be styled like the first example, a bluish gray and white. I would like lines in between the columns and rows.

Anyways, I copy and paste the CSS exactly as I see it and paste into the add your CSS box and nothing happens...

What do I do?