I am a beginner and not a native English speaker, but I will try my best:
I have a problem with the appearance of my top menu on my android smart phone: I want the items to show up as a drop down menu, which they already do on some sites. However, on other sites the menu is not responsive (I hope I am using the correct expression here), no drop down menu appears but just the horrizontal navigation bar. It appears to be that the problem is on those sites where I embedded vimeo or youtube videos with their players. But I am not sure if that is related. Does somebody know what is going on? Thanks a lot in advance.