h2 {
  text-align: center;
}
h2.blue {
  color: #00f;
}
h2.red {
  color: #f00;
}
.cards {
  text-align: center;
  margin: 0 auto;
  display: inline-block;
}
.cards .cell {
  height: 55px;
  width: 55px;
  margin: 0 5px;
  border: 1px solid #000;
  float: left;
  font-size: 45px;
  line-height: 50px;
}
.cards .cell.blue {
  background-color: #00f;
  text-shadow: -1px 0 #66f, 0 1px #66f, 1px 0 #66f, 0 -1px #66f;
  color: #33f;
}
.cards .cell.red {
  background-color: #f00;
  text-shadow: -1px 0 #f66, 0 1px #f66, 1px 0 #f66, 0 -1px #f66;
  color: #f33;
}
.cards .cell.innocent {
  background-color: #808080;
}
.cards .cell.assassin {
  background-color: #000;
  text-shadow: -1px 0 #808080, 0 1px #808080, 1px 0 #808080, 0 -1px #808080;
  color: #000;
  line-height: 41px;
}