diff --git a/lua/core.lua b/lua/core.lua
index e6a56fa..5577217 100644
--- a/lua/core.lua
+++ b/lua/core.lua
@@ -11,6 +11,10 @@ local function set_keymap()
   map("n", keys.jump_up_window, "<C-W>k", option)
   map("n", keys.jump_right_window, "<C-W>l", option)
 
+  -- View documentation and signature details
+  map("n", "K", vim.lsp.buf.hover, option)
+  map({ "n", "i" }, "<C-k>", vim.lsp.buf.signature_help, option)
+
   vim.cmd [[
     " press esc to cancel search highlight
     nnoremap <silent> <Esc> :nohlsearch<CR>:echo<CR>
diff --git a/lua/custom_opts.lua b/lua/custom_opts.lua
index 6cd851d..ad7dda7 100644
--- a/lua/custom_opts.lua
+++ b/lua/custom_opts.lua
@@ -10,10 +10,10 @@ local function strsplit(inputstr, sep)
 end
 
 return {
-  file_explorer_title = "🥷 File Explorer",
-  tab_style = "thin", -- options: thin, thick, slope, slant
+  file_explorer_title = "",
+  tab_style = "thick", -- options: thin, thick, slope, slant
   terminal_size = 0.7, -- control the float terminal only
-  window_transparency = 0,
+  window_transparency = 1,
   auto_open_outline = false, -- options: true, false
   cmdline_view = "cmdline", -- options: cmdline, cmdline_popup
   close_message_notify = false,