The Design panel is the control center that allows you to make design changes to your site. When you select Design from your gray navigation bar, you will see the Design panel on the right-hand side of the screen.
There are only two tabs in the design panel: Sitewide and Page.
Sitewide changes affect every page that is visible on your website.
Page changes only affect the specific page you are currently viewing in the Design tool.
View the support video below for an in-depth overview of the Design area of your Dashboard.