This has been an on going problem with the last few versions of your plugin that I've tried using. All of your fields are wrapped in a div that does not have a class or id associated with it. That means I don't have any easy way to control the layout of that div and the form with css.
You allow for a css class to be applied to the field its self. However, that doesn't allow me to control the wrapping div. If you just moved the css hook to the div I could then control the div, the label, and the field.
I have dug through your code and I know its pretty easy to fix this problem my self. However, I'd prefer to not have to do this every time.
<div class="NEED_CSS_HOOK_HERE"> <label for="son_name">* Name</label> <input class="THIS_CSS_HOOK_DOES_NOTHING_FOR_ME" id="son_name-1339526653" type="text" name="son_name" value="" /> </div>