Post thumbnails gone

Hello,
I used a code found on this link:
https://www.ads-software.com/support/topic/just-simply-skip-this-plugin-it-cannot-give-what-you-need/
The code is:

.has-post-thumbnail, img.wp-post-image, img.featured{ display: none !important; }

Then all my post thumbnails on the blog page are gone, I deleted the plugin but thumbnails will not come back.
Check this link:
https://www.algerie.deals/blog/

Featured images are still shown on posts as you can see on this example:
https://www.algerie.deals/points-a-verifier-avant-dacheter-une-voiture-doccasion/

Any help please?

• This topic was modified 7 years, 11 months ago by AlgerieDeals.
• This topic was modified 7 years, 11 months ago by AlgerieDeals.