fix(lit): replace unsafeCSS with CSSStyleSheet for structural styles … #555

	# Copyright 2025 Google LLC
	#
	# Licensed under the Apache License, Version 2.0 (the "License");
	# you may not use this file except in compliance with the License.
	# You may obtain a copy of the License at
	#
	# https://www.apache.org/licenses/LICENSE-2.0
	#
	# Unless required by applicable law or agreed to in writing, software
	# distributed under the License is distributed on an "AS IS" BASIS,
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	name: Lit renderer build and test

	on:
	push:
	branches: [ main ]
	paths:
	- 'renderers/lit/**'
	- 'renderers/web_core/**'
	- '.github/workflows/web_build_and_test.yml'
	pull_request:
	paths:
	- 'renderers/lit/**'
	- 'renderers/web_core/**'
	- '.github/workflows/web_build_and_test.yml'

	jobs:
	build-and-test:
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v4

	- name: Set up Node.js
	uses: actions/setup-node@v4
	with:
	node-version: '20'

	- name: Install web_core dependencies
	working-directory: ./renderers/web_core
	run: npm i

	- name: Build web_core
	working-directory: ./renderers/web_core
	run: npm run build

	- name: Install Lit renderer dependencies
	working-directory: ./renderers/lit
	run: npm i

	- name: Build Lit renderer
	working-directory: ./renderers/lit
	run: npm run build

	- name: Run Lit renderer tests
	working-directory: ./renderers/lit
	run: npm test

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