Body with height:100% shorter than page

Thank you to every one who can help, I spend hours trying to make look right.

(I can post URLs so it is cutted (the begenings is same for both)) student.sps-prosek.cz/
~eisead11it/web/E-Shop/E-shop.php
~eisead11it/web/E-Shop/style.php
There are few more bugs in the page not just the one in teh title, but I put the most wierd in the Title...

• <article> positioned wierldy
• Some workaroun for max height?
• <td> I would like from it if it could have the same height as widht(33%)
• <h2> line height seems wrong to me (or wierdly positioned...)
• not working in firefox (probably due to all other bugs)

PS: the card is cilickable