body {
    background-color:#ffffff;
}
body .ms-site-container{
    max-width:1200px;margin:0 auto;box-shadow:0 6px 10px 0 rgba(0,0,0,.14),0 1px 18px 0 rgba(0,0,0,.12),0 3px 5px -1px rgba(0,0,0,.2);position:relative
}