.counter-digit {
  display: inline-block;
  position: relative;
  background: linear-gradient(#3c3c3c, #656565);
  color: white;
  border-radius: 3px;
  line-height: 2rem;
  font-weight: bold;
  margin-right:3px;
  width: 1rem;
  text-align: center;
  text-shadow: 0 1px 1px rgba(0,0,0,.3);
}