Hi I'm ew to convertkit email template editor. I am trying to insert a banner background of a different colour to the primary background colour, preferably one at top and one at bottom of each email. Within this to add a logo image. I found instructions on how to do this with the 'Card' template here https://community.convertkit.com/post/tuesday-tip-the-card-template-5eb179282ccacc24f6a6628e but I cannot now find it in the starter templates? Anyone know how to do this or of its not possible any more? Thanks so much!