CFv4 Layout and styling

How can I add CSS to my form?

In CFv4 both the Easy and normal Form Wizards have a box where you can enter CSS. In the Easy Wizard it is the CSS Code box on the Others | JS/CSS settings tab. in the CFV4 normal Wizard you can click the Events tab and then drag a Load CSS action from the Utilities action Group.

In CFv5 for the Simple Form it is the Setup | CSS tab; in the standard Form click the Setup tab and Drag in a Load CSS action from the Basic group. CSS added in these boxes will be loaded as a script declaration in the page header. You can also load a CSS file to format your form.

How can I reduce the space between the form boxes?