Hi Susan, thank you for contacting us.
The background showing between your header and the rest of your page content is likely happening because of the default margin settings on that area in your theme’s stylesheet.
The easiest way to remove that spacing is to reduce the top margin of your content area using Custom CSS. This snippet should give you the design you are looking for:
.entry-content {
margin-top: 0;
}
I hope that code works for you and please let us know if there is anything else that we can do to help!