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D8 Appearance - Change Audience Theme - Navigate to Appearance

1. Navigate to Appearance Section

Go to Admin Menu > Appearance.

D8 Appearance - Change Audience Theme - Appearance Screen

2. Locate Bootstrap Theme

Scroll down to the page to the Uninstalled Themes section to locate the Bootstrap theme.

D8 Appearance - Change Audience Theme - Install Bootstrap as Default

3. Install Bootstrap Theme

Click the Install and Set as Default link that is directly beneath the Bootstrap thumbnail.

Click the Save Configuration button.

D8 Appearance - Change Audience Theme - Click D8 Icon for Home

4. Navigate to Home Page

Click the Drupal 8 icon in the upper left corner of the Admin Menu to go to the front page of the site.

 

D8 Appearance - Change Audience Theme - Bootstrap Theme Enabled

5. New Theme Enabled

The front page will display the newly installed theme.