html,
body {
    height: 100%;
    background: #ECECEC url(/images/style1/bg.png) repeat-x 0 0;
}

body {
    display: -ms-flexbox;
    display: -webkit-box;
    display: flex;
    -ms-flex-align: center;
    -ms-flex-pack: center;
    -webkit-box-align: center;
    align-items: center;
    -webkit-box-pack: center;
    justify-content: center;
}