Adds CSS class to a HTML element depending on scroll position.

This module adds a format filter:

  • Enable ScrollPos-Styler adding (class="sps") to your elements.
  • Configure the scroll position in px to trigger the style adding (data-sps-offset="80") to your elements.
  • "sps--abv" or "sps--blw" classes will be added when the window is scrolled above/below the defined position.

Form element example:

https://www.drupal.org/project/scrollpos_styler