Reply To: How to make the picture items of the blog section clickable ?

Dear Julien,
There is a theme bug but the picture can be made clickable in the blog section. Image overlay black transparent color will hide. If you are okay with this you can use the following CSS code. Please add it on Additional CSS.
Appearance > Customize > Additional CSS

.post-thumb .all-link {
   position: relative;
   z-index: 2;
}

Note: Theme bug will be fixed in its next update.

Best Regards!