aman204 Yes, I have replaced the bg-masthead.jpg that came with the installation because I could not get masthead module work properly so see this as a workaround.
I have added a picture now for in the masthead module which refers to the category and still it did not show.
I have added a custom.css file in the root of the template folder and still it does not show although you can see the picture coming after CTR+F5 but it is overwritten by the (default) bg-masthead.jpg
I was surpised that I had to add custom.css plus code to get a module working properly?
Can you please have a look what is going on?