One minor problem I have with the Cobalt Blue theme is that my image for the header will not expand to fill the header. I'm using a pic that is 1024 x 300. When I go to appearance - header - the preview looks fine. When I go to the site the pic is truncated. I've tried different browsers and that doesn't help. I've looked in the header php and every other css file under the theme (including SASS) but I can't tell where to make a change. All of the css that I see tells it to use use the pic at 100%. I've experimented with the twenty fourteen theme and the same pic fills the header nicely. Any ideas on what I can do to fix this? The site can be found at rockingchair-ranch.com Thanks.