You should not be using nbsp for spacing, this is unreliable, especially with WordPress adding things when you go between text and visual mode.
Right now you do not have the same number of line returns or nbsp in each section, and WordPress adds more paragraph tags in some than in others, causing the space difference.
If you are going to do HTML work, my advices are the following.
- Stay in Text mode
- Check the options “allow raw HTML and scripts” in the page options. That will stop WordPress auto formatting.
To increase / set the space between your images and the title behind it, the best is to use a bottom margin on the images using CSS
- First remove all the extra line returns and nbsp in your html in text mode
- Then you can set the images bottom margin globally for that page by adding the rule below in Advanced Options > Head Section > Custom CSS Rule box, using the value you want
.page-id-691 #content img.alignleft {margin-bottom:40px !important;}