I did two things to achieve this:
1. Removed/hided this line in hooks
add_action( ‘storefront_page’, ‘storefront_page_header’, 10 );
2. Changed margin-bottom to 0 in CSS:
.home.blog .site-header,
.home.page:not(.page-template-template-homepage) .site-header,
.home.post-type-archive-product .site-header {
margin-bottom: 0; }
Website looks really nice. How did you make the cart and the amount to different colors (from white)?