As a big percentage of people read on mobile devices. It is better not to write more than 65 characters in a line.
To make your website more user-friendly, you should use a distinct color for links so that users can easily understand where links are.
According to Google, “To improve the mobile search experience, after January 10, 2017, pages where content is not easily accessible to a user on the transition from the mobile search results may not rank as highly.”
Avoid using interstitials if you want to dominate mobile searches.
