Aligning Related Posts

Hello,

I posted this a few weeks ago but never received help. I am having trouble aligning various texts and the related posts that appear beneath a blog post:

1. The “sharing” text above the sharing social media icons
2. the “like this post” text with the little start
3. The “related” text and the following 3 related posts that show up

I would like each of these things to the center of the page and with the three related posts fitting all within a 970px width so that it is all aligned with the text of the blog post. Hopefully that makes sense! I have the Jetpack plug in so related posts are enabled. I am using the Edit CSS area in the “appearance” area of the dashboard. I don’t know much about CSS but was just trying out a few things in other suggestions I’ve found but no luck!

Hopefully someone can help 🙂