@Durahl
Here is a little example of What Sam said to do.
Not sure what module you are trying to do that with but this will give you the idea of what to tweak in the ctrl+shift+i screen.
.MMM-Cocktails {
Margin-top: 30px;
Margin-left: 140px;
Margin-right: 120px;
}
Hope this makes it a little clearer for you.
PS:
You can look in the modules css file for the .XXX-XXXXX name to use if you have the same difficulty I do with the window thingy… <— Technical term.