Register button not delayed before it pops-up

On the front page, in the header there is the black "Register Now" button. In the module it is assigned:
<p><a href="#" class="btn-big" data-scroll-reveal="enter bottom and wait 1.5s">Register Now</a></p>
It appears immediate, not waiting the time period before it pops-up.
You can test it on your own site:
http://demo.gavick.com/joomla25/events/

Hello,

Please try to move the data-scroll-reveal attribute to the <p> tag - it seems that scroll reveal script has problems with inline elements.

That works
Thank you