As you can see here: http://billbeardcostarica.com/zip-line-congo-tree-top-canopy-tour-12-day/
There is a empty space below the form. I used Firebug to check the code and found out that something is inserting line breaks (
<br>) between hidden fields. It's not a CSS, is something weird that happens with the forms.
If somebody can find out what's wrong I will appreciate the help.