First of all, you should install the add-on. You can find the installation instructions in the How to install add-on article. After add-on installation and activation, new skins will be added to shortcode settings, during insertion of post to the editor.

Take the following steps to use new styles:

  1. Open the dashboard;
  2. Create new post or page;
  3. Press the Insert shortcode button;
  4. Select one of the following shortcodes: Heading, Spoiler, Tabs, or Quote;
  5. Find the Style option and select one of the new styles from the drop-down list.