[Theme Horse Support Team]

Ok that’s great aris and just do one things.

can you see this code in line no 100 of content-extension.php, There you will find this code
<section id="post-<?php the_ID(); ?> clearfix" <?php post_class(); ?>>
Replace this above code with
<section id="post-<?php the_ID(); ?> clearfix" class="post blog-medium" > in your child theme.

Thank you!