There are three themes that are provided: Apparel, General & Card. Select the theme to load the predefined template for the selected store.
You need to select the Store for which you want to apply the theme. By switching the Store, the “activated theme” can be seen for the selected Store. By moving the mouse cursor, the “Apply” button will appear. Click on the Apply button to activate that Theme for the specific store.
Once you click on the Apply button, the popup alert message will appear to confirm changing the theme with default layouts for the selected store.
If you select No, the previous layouts will not get changed. But if you select Yes, the previous layout values will get changed to the default layout values of the theme.
Now you can add and manage the pages (Home/CMS) and select the New Theme in it.