To do Alt + w v g on Mac in Excel, download and install Accelerator Keys, then press Option, followed by w, v, and g.
Command: Toggle Gridlines
This is how to do Alt + w v g on Mac in Excel with Accelerator Keys, the native ribbon and alt key shortcut solution for Mac users who get more done with Excel.
Alt + w v g activates the Toggle Gridlines command in Excel, providing quick access to this feature from the ribbon.