.loading {
    position: absolute;
    top: 0px;
    left: 0px;
    height: 100%;
    width: 100%;
    background-color: grey;
    opacity: 0.5;
    display: none;
    z-index: 99999;
}

.loading .message {
    position: absolute;
    text-align: center;
    top: 50%;
    width: 100%;
    color: white;
    font-size: 50px;
}

.loading .message span {
    position: absolute;
    top: -25px;
    margin-left: -25px;
}