Why does the look of wp-signup appear broken, and why can't my members upgrade?

Why does the look of my wp-signup.php appear broken? (http://www.uploadmywork.com/wp-signup.php) The border within the free section doesn't go all the way around. The line above 9.99 under premium goes through the price.

Also, I made a fake user and when I went to upgrade them I click the paypal button and all it does is refresh the same page.

Any help would be greatly appreciated.

Joe