i'm using code with joomla 1.5.14. i had been test on Firefox very good, but check again with Ie7, 6 i see Div content float right

body {
    margin: 0;
    padding: 0;
    font-size:100%;
    border-top: 1px solid #fff;
    background: url('../images/dodungkhachsan-bg.jpg') top center fixed no-repeat;
    font: normal 11px Tahoma, Arial, Helvetica, sans-serif;
    line-height:1.6;
    color: #333;
}
#bg {

}
.do-dung-khach-san {
    width: 772px;    
    margin: 205px 533px auto;

This site error: http://dodungkhachsan.info/ please help me. Thank you so much

Hi...
Actually that the main problem same here when i am trying to run my code in IE it had some contain problem... so far i am looking for the comment and good solution please help me...

i have a new error, when i check on monitor display 1024x768 is good, but i check on monitor greater than 1024x768, i see all content float left, but background float center http://dodungkhachsan.info i had been attach file temp css