Remove spaces between posts

Try using Firefox with the Firebug add-on for this kind of CSS troubleshooting. Or use whatever developer tool is available in your web browser.

But do not edit the theme itself. First create a child theme for your changes. Or install a custom CSS plugin.

Thanks for the tip. Firebug analysis shown it was:

.hentry {
margin-top: ;
}

Resolved

I’m glad you were able to resolve this! We also have some extra tips for using your browser’s built in tools to inspect CSS, including video walk throughs, here:

https://en.support.wordpress.com/custom-design/how-to-find-your-themes-css/

Post back if any extra questions come up.