I think I managed to solve this.
1) First, change the default tag from span to div on the plugin’s options page, just as Baden said.
2) Go to plugins editor and select collapse-o-matic from dropdown menu
3) Click on the plugin’s current style sheet (either light or dark, you choose the style on the plugin’s settings)
4.0) Look for .collapseomatic class and change the default bottom padding from 10px to 0, it has to look like this:
padding: 0 0 0 16px;
4.1) To have even less space between titles, instead of changing the bottom padding value, add display:inline; to .collapseomatic class.
Hope it works for you!
