.opacity-overlay {
    outline: none;
    position: fixed;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.75);
    z-index: 10000;
    display: none;
    -webkit-backface-visibility: hidden;
}
.opacity-overlay .container {
    height: 100%;
    position: relative;
    z-index: 10001;
}
.opacity-overlay .spinner {
    color: #fff;
    font-size: 32px;
    position: absolute;
    left: 50%;
    top: 50%;
    margin-left: -16px;
    margin-top: -16px;
}

.popup-wrapper {
    text-align: center;
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 100%;
    padding: 0 5px;
}
.popup-wrapper:before {
    content: '';
    display: inline-block;
    height: 100%;
    vertical-align: middle;
}
.popup-wrapper .popup-content {
    float: none;
    padding: 0;
    margin: 0 auto;
    text-align: left;
    z-index: 10003;
    position: relative;
    display: inline-block;
    vertical-align: middle;
}