Part of Jumble's design is the random positioning of posts, and this often causes posts to overlap each other. This is great, because you can hover over each post to bring it to the front, creating a rich experience for the reader as they explore all of your posts.

This layout works best with shorter posts, as the random positioning is calculated using the height of the browser.

If you're using taller posts, you might want to adjust the spacing to reduce some of the overlap and increase the breathing room between posts. This will vary depending on your blog, but you can change the values to find the spacing that works best for your posts.

On your Customize page, open the Advanced tab and then paste this into your Custom CSS box:

section .group {
    height: 200% !important;

You can change the 200 value to experiment with different spacing.