Blog post alignment

Hi,

I would love some help please.

1. I would like to align my blog posts neatly like in the Ashe theme. When I try changing the way the page looks, this is what I get:

https://drive.google.com/file/d/1Mq4Rxu5PNSOF_TntIIgKiCjySwrKLD8u/view?usp=sharing

Whereas this is how I would like it, nice and neat:

https://drive.google.com/file/d/1HjGxqICz4QZ9LHKLKKtns-iHZYZmxnnb/view?usp=sharing

2. Do you know where I need to go to change the text heading size, just for this page?

Thank you so much.

Craig

The page I need help with: [log in to see the link]