Miért nem mozdul?

A kód:

@keyframes bg {

from { background-position: 0 0; }

to { background-position: 100% 0; }

}

body{

background-image: url('eleres');

background-color: #c0deed;

background-position: 0px 0px;

background-repeat: repeat-x;

animation: animatedBackground 40s linear infinite;

-ms-animation: bg 40s linear infinite;

-moz-animation: bg 40s linear infinite;

-webkit-animation: bg 40s linear infinite;

}

Képet behozza de nem mozdul.. :( Ötlet miért?