Fix issue in CSS url processing #329

	name: QA

	on: [push, pull_request]

	env:
	# black default
	MAX_LINE_LENGTH: 88

	jobs:
	check-qa:
	runs-on: ubuntu-20.04
	steps:
	- uses: actions/checkout@v2
	- name: Set up Python ${{ matrix.python }}
	uses: actions/setup-python@v1
	with:
	python-version: 3.8
	architecture: x64

	- name: Check black formatting
	run: \|
	pip install black==22.3.0
	black --version
	black --check .

	- name: Check flake8 linting
	run: \|
	pip install flake8==4.0.1
	flake8 --version
	flake8 . --count --max-line-length=$MAX_LINE_LENGTH --statistics

	- name: Check import order with isort
	run: \|
	pip install isort==5.10.1
	isort --version
	isort --profile black --check .

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