@dragonfi,  thanks for following up and poking around. [animation-edx-appear](https://github.com/edx/edx-platform/blob/master/lms/static/sass/base/_animations.scss#L112) is very specific to our open source Homepage UI. I wouldn't recommend relying on this animation as it may be removed/altered based on any Homepage UI revisions in the future. 

I'd recommend adding an additional general "Fade In" animation to this same Sass partial file. [We've added one that you can just reproduce in our Studio/CMS Sass](https://github.com/edx/edx-platform/blob/master/cms/static/sass/assets/_anims.scss#L5) and referencing that utility class. 

If you do add this,  it would be very helpful to others and I'm happy to review the details as part of this.

Thanks!