How to work with the scrollReveal.js library?

Question

JavaScript

I connected this library
I checked the connection
But for some reason there is no animation (

<script src='js/scrollReveal.js'></script>
    <script>
      window.sr = new scrollReveal();

    </script>
  <div class="block1" data-sr="enter left" ></div>

Answer 1

Maybe there are not enough divs? There are a lot of them in the demo example.