I would like to change the background colour of the header of the Tab Theme only without changing the background of the rest of the app. I believe I need to change the style.css in themes\TabTheme\widgets\Header\css
I have tried to add .jimu-main-background {
background-color: white;
}
But this is not changing the background color of the header. This is a very trivial change but I can't figure out which part of the css I need to change.
Any pointers will be much appreciated.