Looking for ASP.net/jQuery expert

Job ID: 30660351

Budget: $10 – $30 USD

I want to add this function into my website. - https://rankingmastery.com/fadein_div_on_scroll.asp
This is code for this function - https://codepen.io/PawelGIX/pen/kmhLl
I added it, but it didn't work.
Please fix this issue.

Related categories: JavaScript CSS HTML jQuery / Prototype ASP.NET