css - why does the "checkout" button run away from bottom to top left in ie7?

Question

why does the "checkout" button run away from bottom to top left in ie7?
it is view placed in ie6 and firefox.

what happened? how to fix?
demo url: http://linjuming.pydra.org/leb/ie7_checkout_cw/

Answer 1

IE7 does not support :after css selector. You can modify your .clearfix class (which is currently empty) like this:

.clearfix {
   clear: both;
}

As far as I can see, it works fine that way.