? Tags disappearing between Visual and HTML Editors

I’ve read about this same problem on numerous posts, but they all seem to date back 4 years. I’m hoping there is a new fix that actually works.

I am creating an “Adoptable Dogs” page for a dog rescue so my page will be updated often and I will need to go between the Visual and HTML editors often as well.

However, every time I seem to do that the   tags disappear (on only some of the lines) and the formatting gets all funky.

https://www.pittieloverescue.org/testsite/adoptable-dogs/females/

Is there any way to create the space I need between dogs and not have it disappear every time I go between editors? This is becoming extremely frustrating and time consuming.

I appreciate any help you can provide.

Thanks!