/* https://codepen.io/diyorbek0309/pen/mdwbEve */

:root {
  --originLeft: 60%;
  --originTop: 80%;
}

* {
  margin: 0;
  padding: 0;
}

.wrapper {
  height: 100%;
  width: 100%;
  position: absolute;
}
.wrapper div {
  height: 60px;
  width: 60px;
  border: 2px solid rgba(255, 255, 255, 0.7);
  border-radius: 50px;
  position: absolute;
  top: 10%;
  left: 10%;
  animation: 4s linear infinite;
}
div .bubble {
  height: 10px;
  width: 10px;
  border-radius: 50px;
  background: rgba(255, 255, 255, 0.5);
  position: absolute;
  top: 20%;
  right: 20%;
}
.wrapper div:nth-child(1) {
  left: 20%;
  animation: blubb 8s linear infinite;
}
.wrapper div:nth-child(2) {
  left: 80%;
  animation: blubb 10s linear infinite;
}
.wrapper div:nth-child(3) {
  left: 40%;
  animation: blubb 3s linear infinite;
}
.wrapper div:nth-child(4) {
  left: 30%;
  animation: blubb 7s linear infinite;
}
.wrapper div:nth-child(5) {
  left: 10%;
  animation: blubb 9s linear infinite;
}
.wrapper div:nth-child(6) {
  left: 60%;
  animation: blubb 5s linear infinite;
}
.wrapper div:nth-child(7) {
  left: 20%;
  animation: blubb 8s linear infinite;
}
.wrapper div:nth-child(8) {
  left: 60%;
  animation: blubb 10s linear infinite;
}
.wrapper div:nth-child(9) {
  left: 50%;
  animation: blubb 6s linear infinite;
}
.wrapper div:nth-child(10) {
  left: 20%;
  animation: blubb 10s linear infinite;
}
.wrapper div:nth-child(11) {
  left: 90%;
  animation: blubb 9s linear infinite;
}
.wrapper div:nth-child(12) {
  left: 70%;
  animation: blubb 7s linear infinite;
}
.wrapper div:nth-child(13) {
  left: 20%;
  animation: blubb 8s linear infinite;
}
.wrapper div:nth-child(14) {
  left: 5%;
  animation: blubb 6s linear infinite;
}
.wrapper div:nth-child(15) {
  left: 80%;
  animation: blubb 9s linear infinite;
}

@keyframes blubb {
  0% {
    transform: scale(0) rotate(70deg);
    top: var(--originTop);
    left: var(--originLeft);
  }
  100% {
    transform: scale(1.3) rotate(360deg);
    top: 0%;
  }
}