div {
    margin: 0 auto;
    width: 500px;
}

#divText {
    height: 200px;
    background-color: #ff0000;
    color: #ffff00;
    text-align: center;
    font-size: 2.5rem;
    font-weight: bold;
    line-height: 200px;
    box-shadow: inset 0px 0px 20px #990000;
}