Add following code to your page, maybe after your footer:
<button class="btn btn-circle btn-primary scroll-top"><i class="fa fa-angle-up"></i></button>
For this purpose, you need to add an ID attribute to your target element, probably your <section>. Then, use that ID in value of
href attribute of your <a> tag. For example, you have a demo section with following code:
<section class="section" id="section-demo"></section>
To scroll to the demo section, you need a link tag with
href="#section-demo", so it can scroll to the target element upon click. A sample button is as follow:
<a class="btn btn-primary" href="#section-demo">See demos</a>
AOS allows you to animate elements as you scroll down, and up. If you scroll back to top, elements will animate to it's previous state and are ready to animate again if you scroll down.
All you have to do is to add
data-aos attribute to html element, like so:
Also, you can set other options such as duration, delay and offset:
<div data-aos-duration="1300" data-aos-delay="500" data-aos-offset="200">
To see the list of available animations, visit the oficial documentation.
It's recommended to add class
.overflow-hidden to each section that contains animation, so you can be sure that your animated objects don't display outside of the section.