body .outdatedmessage {
    display: none;
    height: 100%;
    width: 100%;
    background-color: white;
    font-size: 200%;
    text-align: center;
    line-height: 100%;
    vertical-align: middle;
}

body .outdatedmessage span ul {
    display: table-cell;
    vertical-align: middle;
    line-height: normal;
}

body .outdatedmessage li {
    list-style-type: square;
}