page .btn-container {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100vh;
}

page .box.top,
page .box.bottom {
  height: 200px;
}

page .box.left,
page .box.right {
  width: 200px;
  height: 100%;
}

page .box {
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: #fff;
}

page .btn {
  margin-bottom: 10px;
}