in responsive state a black bar appears
I choose the modern header version. I choose a sub header image as background. But when I look on tablet or phone a black bar appears below the navigation header. This is the url : http://mhe.daderomarketing.nl/vacatures/
I tried so set several image sizes at theme settings-subheader image but nothing helped to get it right. Please advice.
this happen because of those many headers included and sometimes things like this one happen. We work on it for all the time but at this moment, below css will help you a lot definitely: