diff --git a/nvim/init.lua b/nvim/init.lua
index c5251b9..d8c38d2 100644
--- a/nvim/init.lua
+++ b/nvim/init.lua
@@ -18,7 +18,6 @@ require "colorizer".setup()
 
 local cmd = vim.cmd
 local g = vim.g
-local indent = 4
 
 cmd "colorscheme base16-onedark"
 cmd "syntax enable"
diff --git a/nvim/lua/mappings/lua.lua b/nvim/lua/mappings/lua.lua
index f30573e..5afa831 100644
--- a/nvim/lua/mappings/lua.lua
+++ b/nvim/lua/mappings/lua.lua
@@ -20,6 +20,12 @@ map("n", "<leader>bn",[[<Cmd> bnext<CR>]])
 map("n", "<leader>bp",[[<Cmd> bprev<CR>]])
 map("n", "<leader>bd",[[<Cmd> w\|bd<cr><CR>]])
 
+-- window
+map("n", "<C-h>",[[<C-w>h<CR>]])
+map("n", "<C-l>",[[<C-w>l<CR>]])
+map("n", "<C-k>",[[<C-w>k<CR>]])
+map("n", "<C-j>",[[<C-w>j<CR>]])
+
 -- search
 map("n","<leader>sc",[[<Cmd> nohlsearch<CR>]])
 
diff --git a/nvim/lua/nvim-lspconfig/lua.lua b/nvim/lua/nvim-lspconfig/lua.lua
index 4a5ec17..703b82c 100644
--- a/nvim/lua/nvim-lspconfig/lua.lua
+++ b/nvim/lua/nvim-lspconfig/lua.lua
@@ -29,4 +29,4 @@ buf_set_keymap("n", "]d", "<cmd>lua vim.lsp.diagnostic.goto_next()<CR>", opts)
 buf_set_keymap("n", "<space>q", "<cmd>lua vim.lsp.diagnostic.set_loclist()<CR>", opts)
 
 --  lsp for html , css and js/ts
-require "lspconfig".gopls.setup {}
+require "lspconfig".gopls.setup{}
diff --git a/nvim/lua/nvimTree/lua.lua b/nvim/lua/nvimTree/lua.lua
index 65fef75..1f9270c 100644
--- a/nvim/lua/nvimTree/lua.lua
+++ b/nvim/lua/nvimTree/lua.lua
@@ -58,6 +58,7 @@ vim.api.nvim_set_keymap(
 vim.g.nvim_tree_bindings = {
     ["<CR>"] = get_lua_cb("edit"),
     ["l"] = get_lua_cb("edit"),
+    ["h"] = get_lua_cb("close_node"),
     ["o"] = get_lua_cb("edit"),
     ["<2-LeftMouse>"] = get_lua_cb("edit"),
     ["<2-RightMouse>"] = get_lua_cb("cd"),