[
  {
    "search": "<div class=\"board\"></div>",
    "replace": "<div class=\"board\"><div class=\"wall\"></div></div>"
  },
  {
    "search": ".board {",
    "replace": ".board {\n  position: relative;"
  },
  {
    "search": ".cell {",
    "replace": ".cell {\n  position: relative;"
  },
  {
    "search": ".wall {",
    "replace": ".wall {\n  width: 5px;\n  height: 100%;\n  background-color: #000;\n  position: absolute;\n  left: 50%;\n  top: 0;\n  transform: translateX(-50%);"
  }
]