
.loadingChart span {
    animation-name: blink;
    animation-duration: 2s;
    animation-iteration-count: infinite;
    animation-fill-mode: both;
}

@keyframes blink {
    0% {
      opacity: .1;
    }
    50% {
      opacity: 1;
    }
    100% {
      opacity: .1;
    }
}

.loadingChart span:nth-child(2) {
    animation-delay: 0.2s;
}

.loadingChart span:nth-child(3) {
    animation-delay: 0.4s;
}