import { animate, stagger } from 'animejs';

animate('.square', {
  boxShadow: [
    { to: stagger([1, .25], {
        modifier: v => `0 0 ${v * 30}px ${v * 20}px currentColor`,
        from: 'center'
      })
    },
    { to: 0 },
  ],
  delay: stagger(100, { from: 'center' }),
  loop: true
});

<div class="small justified row">
  <div class="square"></div>
  <div class="square"></div>
  <div class="square"></div>
  <div class="square"></div>
  <div class="square"></div>
  <div class="square"></div>
  <div class="square"></div>
  <div class="square"></div>
  <div class="square"></div>
  <div class="square"></div>
  <div class="square"></div>
</div>