The Design tab is also where you style the campaign with colors and other details to make your campaign stand out to readers. The Page, Header, Body, Columns, and Footer options allow you to adjust colors, borders, text options, and links for the different sections of your campaign. Once you're satisfied with the styles you've picked, click Save to apply your changes.

Mobile Styles take the design you created and optimize the layout for mobile devices. You can use the mobile options to tweak font styles and improve the mobile experience of your campaign.