#outdated {
    display: none;
    position: relative;
    z-index: 1500;
    text-align: center;
    background-color: #fff9c4;
    padding: 16px;
    border: 1px solid #fdd835;
    margin: 4px;
    font-family: "Open Sans", Helvetica, Arial, sans-serif;
}
#outdated h3 {
    margin-top: 0;
}