- Login to your BigCommerce store's admin page.
- Go to Storefront Design > My Themes.
- Click button Upload Theme. On the popup, click button Select theme from your computer.
- Choose the zip file
Supermarket-x.x.x.zipto start installing the theme.
- Waiting for the uploading completed.
When a new theme appears, click on the button Apply Theme as showing below:
Then choose a style you want to use:
Refresh your store's front page you should see the theme installed successfully.