.c-loading-overlay::before {
    -webkit-transition: .4s;
    transition: .4s;
    position: fixed;
    content: "";
    display: block;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background: #fff;
    opacity: 0;
    min-height: 100vh;
    min-height: calc(var(--vh, 1vh)*100);
    z-index: 150;
    pointer-events: none;
}

.c-loading-overlay.is-overlay-active::before {
    pointer-events: initial;
    opacity: 0.5;
}