demo-container { display: block; border: 2px solid rgb(189, 189, 189); padding: 25px 10px 10px; width: 180px; border-radius: 4px; height: 180px; }
demo-object { display: block; height: 130px; width: 155px; background-color: rgb(199, 255, 251); }
demo-object:hover { animation-name: grow; animation-duration: 3s; }
.element {animation-fill-mode: none;}
@keyframes grow { 
  0% { font-size: 0px; }
  100% { font-size: 40px; }
}