Merged cells need to be the same size

This is a setting that you can change in Excel. 

  • Use Ctrl +A (Cmd + A on Mac) to highlight the whole range and then click the Unmerge cells button/link. 
  • If you can't find the "unmerge cells" button you can go to View/Toolbars/Customize and then search for it on the "Commands" tab under the "Format" category. 
  • This page at Microsoft.com has some tips: Merge and unmerge cells

Updated 7/13/16

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