Responsive Header image

Hello,

I too would like to make the image responsive in the header. I know some of these forums are picky about people jumping in (hijacking) other threads so even though I chimed in on another one like this I thought I would start my own before I’m told to.

I would like the background image in the header to be responsive and there is a gray color behind it that I would like removed so that it is white and the image is the only thing in the header visible.

I tried the other suggested CSS trick but that didn’t work for me.