#board {
  display: grid;
  grid-template-columns: 200px 200px 200px;
  grid-gap: 10px;

  .tower {
    display: flex;
    flex-direction: column;
    justify-content: end;
    height: 330px;

    div {
      height: 60px;
      margin-bottom: 3px;
      box-sizing: border-box;
    }

    div.ring {
      border: 1px solid black;
      background-color: lightgray;
    }

    .red {
      fill: red;
      stroke: black;
    }

    .blue {
      fill: blue;
      stroke: black;
    }
  }
}

#reset {
  grid-column: 1/3;
}