@keyframes hop {
  0%   {transform: translate3d(0,0,0) scale3d(1,1,1);}
  40%  {transform: translate3d(0,30%,0) scale3d(1,1.5,1);}
  100% {transform: translate3d(0,100%,0) scale3d(1,.7,1);}
}
:not(.hop, .hop *) > .hop {
  position: relative;
  /*transform-origin: 50% 50%; */
  transform-origin: 100% 100%;
  animation: hop .5s linear alternate infinite;
}