I am able to insert a photo into my header, but how do I create a black background going across the whole page? I've inserted a screen shot below of what I am trying to do. The photo does not extend across the whole page, but fades into the background.
Hey there! In the editor, near the top and underneath the name of the campaign, there is an option for Backdrop; if you click this, you can change the background color to black. The entire campaign (not just the header) will have a black background; if you only want the header-area to have a black background, you can code a custom template using Template Builder (found in Assets from your agency menu at the top right of the app). Let me know if you have any further questions on this!