A question I get from time to time is how to remove the space between toggles in the Divi Theme's accordion module. Here's how to do it.
First, here's an unstyled accordion module showing the gaps between the three items:
Scroll down a bit and locate the "Toggle" box. In that box, enter the following:
margin-bottom: 0 !important;
Save the settings and preview your accordion – here's how it should now look: