body {
    background-color: #000000
}

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
}