How to quickly discover way to make site mobile friendly? (Google Webmaster Tools)

[Fli]

Hello,

please when i get an email from Google Webmaster Tools alerting my site is not mobile friendly, how to quickly discover how to fix site template to be mobile friendly?

Google message:

Google systems have tested * pages from your site and found that 100% of them have critical mobile usability errors. The errors on these * pages severely affect how mobile users are able to experience your website. These pages will not be seen as mobile-friendly by Google Search, and will therefore be displayed and ranked appropriately for smartphone users.

is it about just changing template width if visitor is a mobile visitor or its more complicated "programming"?

[SannoHost]

It is more programming. You can't just adjust the width. Things have to be sorted and spaced for it to be attractive. Most hosts have the option included to set up a mobile option.