Google has created a test allowing website owners to verify that their sites are mobile-friendly. Here's how to check your site:
Publish your site with responsive enhancements.
1. Go to the Mobile-Friendly Test page.
2. Enter your webpage URL (ex: mysite.com)
3. Click Analyze
You should see the message "Awesome! This page is mobile-friendly."
Google released its latest algorithm prioritizing responsive websites ahead of those that aren’t. As a result, Yola has created a set of responsive templates for you to use. These templates are located in the Responsive folder within the Yola SiteBuilder (Style > Change Templates > Responsive).
For more information, please see this tutorial: Responsive Templates