Upwork/loader.css at main · ashirafzal/Upwork · GitHub

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/* CSS for animated bouncing loader. */
.loader {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 400px;
}

/* Loader circles */
.loader > span {
  background: rgb(0, 177, 0);
  border-radius: 50%;
  margin: 5rem 0.5rem;
  animation: bouncingLoader 0.6s infinite alternate;
}

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

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

/* Define the animation called bouncingLoader. */
@keyframes bouncingLoader {
  from {
    width: 0.1rem;
    height: 0.1rem;
    opacity: 1;
    transform: translate3d(0);
  }
  to {
    width: 1rem;
    height: 1rem;
    opacity: 0.1;
    transform: translate3d(0, -1rem, 0);
  }
}