Custom Slideshow css disappears on edit

Trying to edit my homepage deletes the custom css I have for slideshows that are in a drop down menu. They’re formatted as
<details>
<summary>Gallery Name</summary>
*copy paste slideshow block from a private page*
</details>

So every time I need to edit the homepage I have to copy paste the slideshow block from my private page back into place. Its annoying and also means none of my colleagues can edit something basic on the homepage or add to a slideshow if I’m away. This is the only way I was able to figure out how to get an accordion/drop down style menu to contain a gallery without upgrading my plan to allow plugins.

• This topic was modified 4 years, 6 months ago by brmachine.
• This topic was modified 4 years, 6 months ago by brmachine.

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