1. In Admin, go to Content > Design > Configuration. A Design Configuration page opens. It contains a grid with the available configuration scopes. 2. In the configuration record corresponding to your store view, click Edit. The page with design configuration for the selected scope opens. 3. On the Default Theme tab, in the Applied Theme drop-down, select your newly created theme. 4. Click Save Configuration. 5. If caching is enabled, clear the cache. 6. To see your changes applied, reload the storefront pages.
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