Question Topics and icons disappear when the cursor moves on them

I put your 6 lines code at the end of the file components\com_kunena\template\crypsis\assets\less\crypsis.less
Sorry I didn't find your suggested file "custom.less".
And... it works! But...
I still have the same problems with the blocked topics. Please check the two first topics on:
apiservices.biz/fr/forum/4-f-a-q-foire-aux-questions
and also the little icons (attached files + contains your messages) diseapear when the cursor moves on them
What are your next very good tricks for that?
Again thank you for your reactivity and good advice!

Oups the problem is persistant with the module "Latest messages", please check on the right side of:
apiservices.biz/fr/forums/regles
Any idea?...

I'm sorry, I was not here last week. I've tested it again. If I block the script from the jcemediabox, your page works correct. No topics and icons disappear when the cursor moves on them.