.loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    opacity: 0;
    transition: opacity 325ms cubic-bezier(0.4, 0, 0.2, 1) 0ms;
    background: rgba(255,255,255,0.75);
    display: flex;
    justify-content: center;
    align-items: center;
}
.active {
    opacity: 1;
    z-index: 101;
}