nvim/lua/custom/plugins/transparent.lua

return {
  "xiyaowong/transparent.nvim",
  lazy = false,
  opts = {
    extra_groups = {
      "NormalFloat",   -- plugins which have float panel such as Lazy, Mason, LspInfo
      "FloatBorder",
      "NvimTreeNormal" -- NvimTree
    },
  },
}