.skeleton-box {
  display: inline-block;
  height: 1em;
  position: relative;
  overflow: hidden;
  background-color: #DDDBDD;
}
  .skeleton-box::after {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    transform: translateX(-100%);
    background-image: linear-gradient(
      90deg,
      #fff3 0,
      #ccc3 20%,
      #cccccc80) 60%,
      #ccc0
    );
    animation: shimmer 5s infinite;
    content: '';
  }

  @keyframes shimmer {
    100% {
      transform: translateX(100%);
    }
  }