html, body {
    height: 100%;
    margin: 0;
    padding: 0;
    width: 100%;
}
body {
    background-color: #f4eed7;
    position: relative;
}
div {
    width: 400px;
    height: 400px;
    position: absolute;
    top:0;
    bottom: 0;
    left: 0;
    right: 0;
    margin: auto;
}
p { text-align:center}