rea: 2 / 2 / 3 / 3;
      background: teal;
      width: 21px;
      height: 21px;
      justify-self: safe end;
      align-self: safe center;
    }
    .vertRL {
      writing-mode: vertical-rl;
    }
    .relPos {
      position: relative;
    }
    .relPos > * {
      height: 35px;
      width: 33px;
    }
  </style>
</head>
<body>
  <div class="container vertRL"><div></div></div>
  <div class="container"><div></div></div>
  <div class="container relPos vertRL"><div></div></div>
  <div class="container 