[Feat]: Add Scroll Button in the demo section page on mobile devices

[SrinivasDevolper]

Is your feature request related to a problem? Please describe.

We need to add upscroll button in the demo section page on mobile devices.

Describe the solution you'd like
When the user scrolls down the demo section page then needs to show the up scroll button for user-friendly

Additional context
Add any other context or screenshots about the feature request here.

I am GSSOC24 Contributor
Please assign me this feature, I would like to work on this