.spinner-holder {
    position: relative;
}

.spinner-holder::before {
    content: "";
    display: block;
    background: RGBA(255,255,255,0.7);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 99;
    color: #FFF;
    text-align: center;
    vertical-align: middle;
}

.spinner-holder .loaderIcon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 100;
    display: inline-block!important;
    font-size: 30px;
    color: #777;
}