#main {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 64px!important;
}

.spinner {
    position: relative;
}
.spinner:before, .spinner:after {
    content: "";
    position: relative;
    display: block;
}
.spinner:before {
    animation: spinner 1.5s cubic-bezier(0.75, 0, 0.5, 1) infinite normal;
    width: 1em;
    height: 1em;
    background-color: #598bff;
}
.spinner:after {
    animation: shadow 1.5s cubic-bezier(0.75, 0, 0.5, 1) infinite normal;
    bottom: -.5em;
    height: .25em;
    border-radius: 50%;
    background-color: #598bff20;
}

@keyframes spinner {
    50% {
        border-radius: 50%;
        transform: scale(0.5) rotate(360deg);
    }
    100% {
        transform: scale(1) rotate(720deg);
    }
}
@keyframes shadow {
    50% {
        transform: scale(0.5);
        background-color: #598bff10;
    }
}