Copy number counter on new home page

I love the area where it counts how many happy customers you’ve had. I wanted to duplicate that look on my site.

I tried duplicating the code you guys now have on your home page to a page I’m creating in Enfold:

<div class=”avia-big-number avia-color-font-dark avia-builder-el-5 avia-builder-el-no-sibling avia_animate_when_visible number_prepared avia_start_animation”><h3 class=”avia-big-number-title”><span class=”avia-single-number” data-number=”69″>69</span><span class=”avia-no-number”>,</span><span class=”avia-single-number” data-number=”812″>812</span></h3><div class=”avia-big-number-content”><p>Happy Customers</p>
</div></div>

But it didn’t animate in the same way it does on your site. Was that used with a plugin of some sort? Or is there a shortcode I should use?