.lds-hourglass {
    display: inline-block;
    //position: relative;
    width: 80px;
    height: 80px;
    z-index:2000; top:50%; left:50%; position:absolute
}
.lds-hourglass:after {
    content: " ";
    display: block;
    border-radius: 50%;
    width: 0;
    height: 0;
    margin: 8px;
    box-sizing: border-box;
    background: seashell;
    border: 32px solid #fff;
    border-color: #fff transparent #fff transparent;
    animation: lds-hourglass 1.2s infinite;
}
@keyframes lds-hourglass {
    0% {
        transform: rotate(0);
        animation-timing-function: cubic-bezier(0.55, 0.055, 0.675, 0.19);
    }
    50% {
        transform: rotate(900deg);
        animation-timing-function: cubic-bezier(0.215, 0.61, 0.355, 1);
    }
    100% {
        transform: rotate(1800deg);
    }
}

.doNotShow{
    display: none;
}