* {
  margin: 0;
  padding: 0;
}
html,
body {
  height: 100%;
  width: 100%;
}
body {
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: #1e90ff;
}
.drop {
  position: relative;
  width: 50px;
  height: 50px;
  border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
  /* background-color: rgba(0, 0, 0, 0.5); */
  /* border: 1px solid red; */

  box-shadow: inset 5px 5px 10px rgba(0, 0, 0, 0.5),
    1px 1px 2px rgba(0, 0, 0, 0.1);

    animation:  action 5s ease-in infinite alternate;
}
.drop::before,
.drop::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  background-color: #fff;
}
.drop::before {
  width: 5px;
  height: 5px;
  top: 10px;
  left: 15px;
  opacity: 90%;
}
.drop::after {
  width: 2px;
  height: 2px;
  top: 6px;
  left: 10px;
  opacity: 70%;
}

@keyframes action {
  10% {
    border-radius: 13% 87% 37% 63% / 54% 12% 88% 46%;
  }
  20% {
    border-radius: 56% 44% 71% 29% / 24% 58% 42% 76% ;
  }
  30% {
    border-radius: 47% 53% 66% 34% / 36% 52% 48% 64% ;
  }
  40% {
    border-radius: 71% 29% 63% 37% / 21% 74% 26% 79% ;
  }
  50% {
    border-radius: 10% 56% 34% 42% / 42% 56% 10% 37% ;
  }
  60% {
    border-radius: 38% 48% 39% 42% / 39% 21% 44% 52% ;
  }
  100%{
    border-radius: 13% 87% 37% 63% / 54% 12% 88% 46%;
  }
}