How can I change space between a given background image in a pattern. The image is mandatory online :P

I'm making this background using just online images and want to control the space between those in the pattern. Is there any way to achieve this using just CSS? I know you could use round and space but in general would be more useful to control specifically the amount of space between them.

Here's the pen --> https://codepen.io/Mau-Di-Bert/pen/WKYLzV

In this research, I've found nonetheless, really cool posts about backgrounds and this it's super useful: https://24ways.org/2011/css3-patterns-explained / Lea Verou it's awesome to follow!

Thanks, people! 😁