html, body {
  margin: 0;
  padding: 0;
  overflow: hidden;
  background: transparent;
  font-family: system-ui, -apple-system, sans-serif;
}

.render-board-body {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100vw;
  height: 100vh;
}

.render-board-container {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  padding: 4px;
  box-sizing: border-box;
}

.render-board-container .board-frame {
  display: grid;
  justify-items: center;
  position: relative;
}

.render-board-container .board-top,
.render-board-container .board-bottom {
  display: grid;
  grid-template-columns: repeat(9, var(--cell-size));
  justify-content: center;
  font-size: 11px;
  color: rgba(0, 0, 0, 0.4);
  width: calc(var(--cell-size) * 9);
  text-align: center;
}

.render-board-container .board-top span,
.render-board-container .board-bottom span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 18px;
}