Hello Tikaram,
It solves problem nr 1! Thank you very much.
Problem 2 however still exists. Here it is the menu itself (not the submenu’s) that splits into two columns when you change the height of the browser. The second column has no background colour and therefore is not readable. I have a picture that can explain this better than my words, but cannot find where I can upload it …
Greetings,
An.