@import url(https://fonts.googleapis.com/css?family=Open+Sans);


#wrap1234 {
  width: 100%;

  position: relative;
  overflow: hidden;
}



.ball {
  pointer-events: none;
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: gray;
  animation: implode 1s ease-in-out;
  animation-fill-mode: both;
  opacity: .5;
}

@keyframes implode {
  100% {
    transform: scale(0);
  }
}