I figured out a solution:
Copy the following code into the custom CSS section:
/* Back to Top Button */
a[href*="#top"] {font: bold 1.5em/34px "Lato",Arial,sans-serif;color: #FFF;margin: 0 0 0 44px;text-shadow: 0 1px 2px rgba(70,70,70,0.5);background: linear-gradient(0,#2182ac,#2aa3d8); padding:5px 15px 5px 15px; box-shadow: 0px 5px 10px #333; position:fixed; bottom:20px; right:20px;}
For the page you want the button to appear on:
- Copy the page URL
- Go into page edit mode
- Create a new link with:
- Link_URL: (page url)#top <----- "Add #top to the end of the page url"
- Link_Text: back to top <------ "This text will appear on the button"
if done successfully the button will appear on the bottom right corner of the page.