Blog Post trouble

I created a blog post long time ago and stopped using it because I can't get it to look like I want it to. I have created blogs before, but this program completely perplexes me, like, why is there a huge gap before the beginning of my blog? Can someone help me with this? Example: https://www.deartales.com/book-blog/nightriders-of-the-double-spur

Also, I can change the pictures on the blog design, but they don't come out on the blog.