Form
The form module gives you style options that allow you to control to entire look and feel of the form.
Default style
This is the default style of the Form+ module. This style is controlled in the theme settings under Forms > Form.
Custom style
This is an example of how you can style the form fields to have a single bottom border.
Light form
This is the default light form styles. This style is controlled in the theme settings under Forms > Light form.