Icons for the 4 main course tabs are misaligned on IE11

Hello,

When I'm viewing a course, there are 4 main tabs (Units, Notifications, Workbook, Course Details). Each of the titles of those units have an associated icon to the left of them.

In IE, those icons are aligned right over the center of the titles, obscuring the titles.

Is there a known custom CSS fix for this?

I know IE blows... but I'd prefer to have such a fundamental aesthetic working in all browsers.