#container {
    display: none;
}
#custom-loading {
    position: fixed;
    width: 100%;
    height: 100%;
    display: block;
    /* overflow: hidden; */
    z-index: 1000;
    top: 0px;
    right: 0px;
}
#custom-loading img {
    width: 100px;
    display: block;
    margin: auto;
    position: absolute;
    top: 40%;
    left: calc(50% - 50px);
}