A main customer of my website complains that the drop down menu on the website is translucent and not clickable. I use OPTI theme and the customer uses Internet Explorer to open the page.
If I open it on Safari or Chrome the dropdown menu does not show this bug at all. How to resolve this. Hopefully I don't have to re-write any code; I am not good in that.
The blog I need help with is kenniswerf.wordpress.com.