[firstformedia]

well i found it how to resolve, i had to add this to html,body:

html,body {
height: 100%;
width:950px;
background-color: #ffffff;
margin: 0 auto;
padding: 0px;
font-family: verdana, arial, helvetica, sans-serif;
font-size: 12px;
min-width: 780px;
border: 0px none;
}