If you've added an embed element to your website and it's scrolling a little bit when you view it on the live site, you can either:
Make the embed element taller, you can try between 50-100px more to begin with
You can add an iframe resizer code to get the embed to resize to fit all the content on the live site. Note: this requires you to add code to the source of the embedded content. If you don't have access to edit that code this won't work.