When you first install Commerce the design elements of the store are based on the default
Magento Blank theme. The Luma theme is also available if you installed the sample data. You can modify a theme, add themes created by others, or create your own. Commerce Marketplace contains a growing selection of themes that you can install to change the appearance of your store. To learn how to create or modify a theme, see the Frontend Development Guide.
Before you begin, make sure that you have a valid set of Commerce Access Keys.
To add a theme to your Commerce store, follow the instructions available on the Commerce Marketplace:
To apply the theme to your store, see Themes.