Need help with setting up exceptions for IE 10/11

Hi
Not much of a programmer, so I would be very grateful if somebody could find time to help set up a working example in custom code that detects IE 10 and 11 and addresses a specific class in Webflow, if possible.

EDIT:
Found the solution. The reason the code did not work was that Webflow converts upper case to lower case for the css. Go to ‘Export code’ to fint the right class name, it can be different that what you set in Webflow.