body {
    background-color: #fff;
    font-family: sans-serif
}

#holding-img-div {
    color: #cccccc;
    position: absolute;
    top: 50%;
    left: 50%;
    margin-top: -50px;
    margin-left: -50px;
    width: 100px;
    height: 100px;
}

#holding-error-div {
    color: #cccccc;
    position: absolute;
    text-align: center;
    top: 50%;
    left: 50%;
    margin-top: 50px;
    margin-left: -150px;
    width: 300px;
    height: 100px;
}