Suppr article description


I want to delete the article description, to only have a picture and the read more button.
I speak about the grey lines you can see in the screen shot attached.

Thank you a lot.

My website : Nos reportages – Out of the Box

can u teach me how to set up this kind of blog page just like you. my page can’t do that, i don’t know why. and how to set up the the Breadcrumb like the demo?
my website: