[Plugin: Ninja Forms Lite] Aligning Boxes

Greetings-

I cannot figure out how to edit this form so that the boxes are aligned in unison (ex. http://www.pcdiy.com/wp-content/uploads/2011/05/application-form.gif )

Is there a way to align these boxes so that the form looks neat and clean?

Thanks!

http://wordpress.org/extend/plugins/ninja-forms/