Open the theme customizer for the theme where you want to add the desired blocks.
Click on "Customize"
Navigate to the desired template.
Add a new section or block to an existing section, then click on the "Apps" tab to search for the desired Snap Block.
In this example, we're adding the "Countdown Timer" block.
Adjust the appearance settings.
Adjust colors and more.
You can add a background image.
To ensure readability, you can add an overlay to the background image.
Review all changes and save them when you’re ready to publish.