Need a helping hand: Browsers <=IE6 not working

[WillCast]

Hello,

I've been trying to figure out what is causing this annoying problem and no luck so far...

My site looks fine on Firefox, chrome, flock and even IE7 are working fine.

However, IE6 is messing all things up.

I made a exhaustive checking on tag balance and everyting *seems* to be fine.

I validated my page in W3.org. It shows only 6-8 errors, nothing critical:
http://validator.w3.org/check?uri=http%3A%2F%2Fes.dnqna.com%2Fseo%2Fprueba%2F&charset=(detect+automatically)&doctype=Inline&ss=1&outline=1&group=0&st=1&user-agent=W3C_Validator%2F1.606

And still it is not working. Can you please take a look at it?

The homepage looks fine everywhere, but if you click on any article, the IE6 shifts everything and the main content got messed.

Homepage (looks OK): http://es.dnqna.com
Testing article (messed up): http://es.dnqna.com/seo/prueba/

(by the way, it uses Wordpress)

Many thanks in advance,
Will

 

[jugalboro]

I think this problem is due to your css. Check it properly..