Log in as admin Make sure the table settings are enabled for the Atto plugin (including selecting all of the border style options) site administration > plugins > text editors > atto html editor > table settings Go to a place with the Atto editor (e.g. the create course page) Add a table using Atto Click the "show more buttons" button (top left) to reveal the table button Try adding and editing the table The things you should see: The border option should default to "Theme default" When "Theme default" is selected the other border options are disabled Default border style should be "Inherit" Setting "Theme default" should remove the inline styling of the table all together The default colour selection should be "Theme default" which, when selected, removes the inline colour styling