Add data-parallax and .data-rellax-speed to make a parallax object.
<h1 data-rellax-speed="-20" data-parallax="data-parallax">Parallax</h1>
data-rellax-speed can be positive or negative number .
JavaScript
<script src="../vendors/rellax/rellax.js"></script>For parallax backgrounds See here ⟶