Problem With my CSS

Hi Guys, Thanks in advance!

I have been trying to fix the look of the reservation but i don’t know what to change.
Everything is Displaying Weird in my website.

If you can check out and give a direction which Setting or CSS do i have to change.

http://www.santacatalinasurfpoint.com/reservations
Thanks a Lot!

Julio.

Try to set the width=”” attribute of the forms shortcode to something smaller. 500px-600px I guess.

Thanks for your help, could i know where should i change this? Directly in the from short code? or i should get into the CSS, if css which one? Thank you so much!!!