Help with Formatting my blog

Hello, I need help with formatting my blog. I'm attaching a link to my most recent post. When you scroll to the end, you'll see my actual post runs into the comment section. How do I prevent this from happening. https://www.glendakharrison.com/the-dig-blog/6-stylish-ways-to-persevere-during-social-distancing

Also, I noticed my YouTube icon changed on my website follow buttons. How can I put it back the way it was? I had the icon matching all the other social media platforms, and for some strange reason, YouTube icon changed.