Error with visualization of pages - div tag

[neusagudo]

Hi everyone,

I am having a problem, and it's hard to define...

I have updated to 8.2.1 a few moments ago and the thing is that there is some pages (for example http://www.fcgjung.com.es/art_111.html) that have started not working fine with div tags and so.

If you look at this page, you'll see that there is an horizontal menu, it's suposed to be drop-down, but it fails.

Also, there is supposed to be some yellow information on the right side, but that information is dropped to the bottom of the page...

Have no idea what's happening and it is quite a huge problem...

Thanks