body {
  width: 100%;
  length: 100%;
  margin: 0px;
  padding: 0px;
}

.tile {
  position: absolute;
  margin: 0px;
  padding: 0px;
}

.rd, .rx {
  background-color: lightgrey;
}

.wk {
  background-color: brown;
}

.hm {
  background-color: red;
}

.rl {
  background-color: grey;
}

.pk {
  background-color: green;
}

.rv {
  background-color: blue;
}