.bs-loading {
  position: relative;
  width: 120px;
  height: 90px;
  margin: 0 auto;
  &::before {
    content: "";
    position: absolute;
    bottom: 30px;
    left: 50px;
    height: 30px;
    width: 30px;
    border-radius: 50%;
    background: #2a9d8f;
    animation: loading-bounce 0.5s ease-in-out infinite alternate;
  }
  &::after {
    content: "";
    position: absolute;
    right: 0;
    top: 0;
    height: 7px;
    width: 45px;
    border-radius: 4px;
    box-shadow: 0 5px 0 #f2f2f2, -35px 50px 0 #f2f2f2, -70px 95px 0 #f2f2f2;
    animation: loading-step 1s ease-in-out infinite;
  }
}

@keyframes loading-bounce {
  0% {
    transform: scale(1, 0.7);
  }
  40% {
    transform: scale(0.8, 1.2);
  }
  60% {
    transform: scale(1, 1);
  }
  100% {
    bottom: 140px;
  }
}
@keyframes loading-step {
  0% {
    box-shadow: 0 10px 0 rgba(0, 0, 0, 0), 0 10px 0 #f2f2f2,
      -35px 50px 0 #f2f2f2, -70px 90px 0 #f2f2f2;
  }
  100% {
    box-shadow: 0 10px 0 #f2f2f2, -35px 50px 0 #f2f2f2, -70px 90px 0 #f2f2f2,
      -70px 90px 0 rgba(0, 0, 0, 0);
  }
}
