Sticky Column Blog - Fluid Engine

Okay, I actually think I figured it out (may need some adjustment - open to suggestions!). But for anyone searching:

I used this code -- a Code box on the column, and then just adjusted the top px. 

Source: Will Myers

Add this to Custom CSS:

@media(min-width:767px) {
  .col.wm-sticky-column {
    position:sticky;
    top: 150px;
  }
}

Put this in a code box in the column you want (works for blog posts, even in fluid engine):

<div class="wm-sticky-column"></div>
<script>
(function() {
  function initSticky() {
    let stickyStarts = document.querySelectorAll('.wm-sticky-column');

    stickyStarts.forEach(el => {
      let col = el.closest('.col');
      if (!col) return;
      col.classList.add('wm-sticky-column');
    });
  }

  window.addEventListener('DOMContentLoaded', initSticky);
}());
</script>