replace Linaria preprocessor with postcss to fix an error of postcss-… #888

	# This is a basic workflow to help you get started with Actions

	name: CI

	on:
	push:
	pull_request:

	# A workflow run is made up of one or more jobs that can run sequentially or in parallel
	jobs:
	# This workflow contains a single job called "build"
	build:
	name: Node.js ${{ matrix.node-version }} on ${{ matrix.os }}

	# The type of runner that the job will run on
	runs-on: ${{ matrix.os }}

	env:
	GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

	strategy:
	matrix:
	node-version:
	- 20
	- 18
	- 16
	os:
	- ubuntu-latest
	- macos-latest
	- windows-latest

	# Steps represent a sequence of tasks that will be executed as part of the job
	steps:
	# Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
	- uses: actions/checkout@v2

	- name: Use Node.js ${{ matrix.node-version }}
	uses: actions/setup-node@v1
	with:
	node-version: ${{ matrix.node-version }}
	cache: yarn

	- name: Install dependencies
	run: yarn --frozen-lockfile

	- name: Run `lint`
	run: yarn lint

	- name: Run `test`
	run: yarn test

	- name: Run `build`
	run: yarn build

Provide feedback