Accordion problem

[SOHN]

Hi,

I want to hide some divs on a page and show it by clicking on title.
I tried http://laythemeforum.com/topic/3716/show-hide-chunk-of-text/2 this method but I realize that it opens all the hidden divs when there were several on the page. Also, I want to hide again the div by re-clicking the title.
Here's the page I'm working on
https://ceseditions.com/wp/category/projets
I've searched and tried several jquery for accordion, but I didn't manage to make it work on my page.
Anyone can help?

Thank you!