Created a blog post, mostly based on the blog-post-template. In the content there is an area for 'related posts', based on four separate cards. Spend hour searching and trying to find the root cause why the lay-out gets messed up as soon as the cards are added.

I tried creating a snippet, but it errors all the time. Hope you are willing to have a look at CodePen MDBootstrap I assume because of social media code, I there for add the the code to this post.Any help is highly appreciated!