Участник:VTCobaltblood/Test.css

@keyframes a {
   to: { transform: scale(300, 300); }
}

.tup {
   width: 1000px;
   height: 100px;
   animation: a 10s linear;
   animation-play-state: paused;
}

.tup:hover {
   animation-play-state: running;
}

.card {
  width: 350px;
  height: 475px;
  text-align: center;
  display: inline-block;
  background-color: gainsboro;
}