.bubble-container {
  position: fixed;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  z-index: 999;
}
.bubble {
  position: absolute;
  border-radius: 50%;
  background-color: #fff;
  opacity: 0.7;
  border: 2px solid hsla(0, 0%, 100%, 0.5);
  transform-origin: center;
  animation: spongebob-bubble 2.5s ease forwards;
  z-index: 999;
}
@keyframes spongebob-bubble {
  0% {
    transform: scale(0.1) translate(100%, 100%);
    opacity: 0;
  }
  40% {
    opacity: 0.8;
  }
  to {
    transform: scale(1.5) translate(-200%, -200%);
    opacity: 0;
  }
}