I want to use a zoho creator form on my webpage but i need a way to modify it's appearance.

You can see my form on my webpage below. It is in the orange footer at bottom of page named (Boat Selection).

http://precisionsails.mybigcommerce.com/

I cant seem to figure out why the drop down fields are transparent. I want them to have a white background, not transparent, how can i change this? These are lookup fields in my form.

Also is there something i can do to have the menu that drops down appear up above the field?  I want to put this form in my footer of my webpage but because it drops down, the field is off the screen.  I need a way for this to appear up rather than down?

I tried using jquery to manipulate the form but it seems i cant because its in an iframe. Is there any suggestion on how this might be done?

Thanks