.wpf-spinner {
    width: 32px;
    height: 32px;
    position: fixed;
    left: calc(50% - 16px);
    top: calc(50% - 16px);
    display: none;
    z-index: 999999;
}
.wpf-spinner:after{
    content: '';
    position: absolute;
    opacity: 0.8;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #9f9f9f;
    border-radius: 50%;
    width: 32px;
    height: 32px;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    margin: auto;
    animation: wpc-spinner .5s linear infinite;
}
.wpf-filters-overlay{
    background-color: rgba(0,0,0,0.5);
    opacity: 0;
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    top: 0;
    z-index: -1;
    margin: 0;
}
.wpf-spinner.is-active{
    display: block;
}
@keyframes wpc-spinner {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}