There have @media queries section in stye.css file. Open your style.css file and go to this section @media only screen and (max-width: 800px) {
Add this new CSS code in that section
#home-top .home-banner {
background-position: 0 0!important;
}Also, I cannot get the header to be full-width as it is in the blog format example. Thanks for your help.
Make sure you upload logo image of minimum 2160px (width) to span it full width as seen in flex blog demo layout. The current logo image size used in flex blog demo is 2160px X 500px