Rollover works stranger

Hi team,

thank you for your plugin, it s a very cool work !

I have a problem with it.
I created rollover images.
When I go on my page, rollover is already activated on each image.
And after I mouseover them, already works correctly.

Could you help me please ?

My page is : https://www.artworkvfx.com/formations
password : jdcoindre13

Let me know please.

Thank you so much

https://www.ads-software.com/plugins/wp-visual-slidebox-builder/