.lds-dual-ring {
    display: none;
}

.lds-dual-ring.active {
    display: inline-block;
}

.lds-dual-ring:after {
    content: " ";
    display: block;
    width: 24px;
    height: 24px;
    margin: 2px;
    border-radius: 50%;
    border: 3px solid black;
    border-color: black transparent white transparent;
    animation: lds-dual-ring 1.2s linear infinite;
}

.lds-dual-ring.white:after {
    border: 3px solid white;
    border-color: white transparent white transparent;
}

@keyframes lds-dual-ring {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}