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 .

<script src="../vendors/rellax/rellax.js"></script>

For parallax backgrounds See here ⟶