.jf-loading {
    position: absolute;
    top: 50%;
    left: 50%;
    z-index: 1001;
    transform: translate3d(-50%, -50%, 0);
    display: flex;
    justify-content: center;
    align-items: center;
    &.mask {
        top:0;
        bottom:0;
        right:0;
        left:0;
        transform: translate3d(0,0,0);
    }
}