3 columns ?

This is 2 columns et 1 widget actually

Hi! You might be able to do that with a little help of a CSS. Add the code below in Appearance → Customize → Additional CSS:

@media only screen and (min-width: 1000px) {
   .threecolumn {
    -moz-column-count: 3;
    column-count: 3;
   }
}

Then use the “threecolumn” class on content like this:
<div class="threecolumn"> Your content.. </div>

Let me know how it works.

Cheers,
George

do i paste this <div class=”threecolumn”> Your content.. </div> also in additional css?

No — you paste it in the Text view in the WordPress Editor: https://www.wpbeginner.com/glossary/text-editor/