@keyframes rotate{
    from{transform:rotate(-360deg)}
    to{transform:rotate(360deg)}
}


.lds-hourglass,
.lds-hourglass:after {
    box-sizing: border-box;
}

.lds-hourglass {
    display: inline-block;
    position: relative;
    width: 20px;
    height: 20px;
}

    .lds-hourglass:before {
        content: " ";
        display: block;
        border-radius: 50%;
        width: 0;
        height: 0;
        margin: -1px -8px;
        box-sizing: border-box;
        border: 12px solid currentColor;
        border-color: currentColor transparent currentColor 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);
    }
}