How to make a smooth change blocks when changing the width of the screen?

Is there a website https://demo.kaliumtheme.com/agency/
if you open the developer dashboard in the browser and reduce the width, the blocks adapt through time and smoothly changing the width, gradually grouped from 3 columns to 2. How to do it ? When I do sites, the transition from 3 to 2 columns lightning, and you can see how they slide
March 23rd 20 at 19:03
2 answers
March 23rd 20 at 19:05
March 23rd 20 at 19:07
Looked at the site code and found that you are using masonry. And to sort the Isotope from the same developer. Here generally all of its projects.

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