There are 5 Page Title style for you to select from.
Step 1: Navigate to Appearance >> Customize >> Page >> Page Title
Step 2: Choose Page Title Style you want
Step 3: Click on Publish button to finish.
Note: If you have imported the demo, you won’t be able to customize the Page Title in the landing page. Please create a new page if you would like to try to set a default page title style.