body {
    margin: 0;
    padding: 0;
    background-color: rgb(0, 0, 0);
    color: gray;
    font-family: Georgia, Times, "Times New Roman", serif;
    display: table-cell;
    vertical-align: middle;
    text-align: center;
}

html {
    height: 100%;
    display: table;
    width: 100%;
}