isotope fitRows example

isotope.js

/**
 * 20px gutter between columns
 * using imagesLoaded
 **/

const $grid = $('.js-features');
$grid.imagesLoaded(() => {
  $grid.isotope({
    filter: '.b2b',
    itemSelector: '.js-featuresItem',
    layoutMode: 'fitRows',
    fitRows: {
      gutter: 20,
    }
  });
})

style.css

/**
 * 5 columns, fill whole container
 **/

.gridItemContainer {
  width: calc(20% - 4/5 * 20px); }
}