#overlay {
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.8);
    position: fixed;
    left: 0;
    top: 0;
    z-index: 5000;
    overflow: auto;
}

.modal-customer-notification{
    width: 500px;
    height: auto;
    position: relative;
    left: calc((100% / 2) - 250px);
    top: calc((100% / 2) - 250px);
    border: solid 2px black;
    z-index: 5001;
    background-color: white;

}

#checkMessage {
    margin-left: 15px;
}