probleme with butons displaying when i passed my forum fixed ..

[scorpss]

hello all ,

i have a small probleme on my forum , i passed my forum from fluide to fixed by add'eding this on additional.css :

html {
width: 1024px; /* largeur du forum */
margin: auto; /* centrage du forum */
}

the probleme is here only :

http://image.noelshack.com/fichiers/2012/47/1353715240-sans-titre.png


can someone help me to fix this ?


thanks