I have an issue where the Activity Completion and Course Completion report pages do not display correctly (Course Administration --> Reports --> Course Completion etc.). Due to the number of activities, the content area does not expand far enough to the right for each item to be seen clearly ('1. Course Completion' in the screenshot). Ideally I would like the white background of the central content area to extend the width of the columns, as it does correctly for the Grader Report (shown as '2. Grades' in the screenshot).
Is there a setting I can change to achieve this, or a piece of CSS code I can place into the custom CSS box for the theme?
We are using Moodle 3.1.6.
The theme is More build version 2016052300.
Any help would be appreciated.