.content-box {
  width: 550px;
  margin-left: auto;
  margin-right: auto;
  background-color: black;
  border: 3px solid white;
  padding: 20px;
}

.center {
  text-align: center;
  font-size: 30px;
  margin: 0;
}

.center-weird {
  text-align: center;
  font-size: 40px;
}

.counter {
  text-align: center;
  font-size: 20px;
  margin: 30px;
}

@keyframes squish {
  0%   { transform: scale(1, 1); }
  30%  { transform: scale(1.3, 0.7); }
  60%  { transform: scale(0.8, 1.2); } 
  100% { transform: scale(1, 1); }     
}

.squish-effect {
  animation: squish 0.25s ease-out;
}