Mobile friendly website

Those last years, the uses of mobile devices has rised substancially, and google know it, this is why they set their ranking algorithm to take in consideration mobile frienlyness to better rank a website, google also put a tool to check a mobile friendlyness test at this adress:  , and not only for google it is also good for the site owner to get a mobile friendly web site
One example is a web site we were working on (rapide car) a car rental agency, when created we were not focusing at the mobile friendlyness, but after, we noticed that we passed from 33% mobile visitors to 55% in average (Data from google analytics) so it was a must update to mobile friendlyness and that what we did, and in less in a week the website ranking won some places in the google search engine (Data from Pro Rank Tracker)
So, if you are making a web site, be sure to make it mobie freindlyness