Here is a website:
The Problem is that the main navigation is working in Chrome & Firefox but not correctly in Edge or Internet Explorer. The submenu is not unfolding.
I guessed it had something to do with the display proberty of the ul class “dropdown-menu” but thats seems not the case.
Why are you supporting Internet Explorer still? I understand Microsoft Edge but as far as I remember Microsoft disabled support for Internet Explorer. Is this a legacy project for a company or something personal?