Neovim

csskit is available in both the nvim-lspconfig and mason.nvim registries.

If you're using a "neovim distro" such as LazyVim, NvChad, AstroNvim, or LunarVim, these all include mason.nvim and nvim-lspconfig by default.

Quick setup (Mason)

If you already have mason.nvim and nvim-lspconfig installed, run:

:MasonInstall csskit

Mason will install the binary and configure lspconfig automatically. Open a .css file and run :LspInfo to confirm csskit is active.

Manual setup

If you're not using Mason, install the csskit binary yourself:

• npm: npm install -g csskit
• Cargo: cargo install csskit
• Binary download: Grab a release from GitHub Releases

Then register the server in your Neovim config:

require("lspconfig").csskit.setup({})

Open a .css file and run :LspInfo to confirm csskit is active.

Disabling other CSS LSPs

If you have cssls (the VSCode CSS language server) or another CSS LSP running, you may want to disable it to avoid duplicate results.

Uninstall via Mason:

:MasonUninstall css-lsp

Or prevent it from starting (LazyVim):

opts.setup = opts.setup or {}
opts.setup.cssls = function()
  return true
end

Returning true tells LazyVim "I'm handling this server" and skips its default setup.