Refactor styles to match new CSS nesting behavior #1417

Job	Run time
lint (npm run lint:eslint, macos)	1m 21s
pylint (macos)	11s
lint (npm run lint:eslint, ubuntu)	1m 4s
pylint (ubuntu)	9s
lint (npm run lint:eslint, windows)	2m 48s
pylint (windows)	27s
todo-check	3s
lint (npm run lint:yaml, macos)	41s
lint (npm run lint:yaml, ubuntu)	29s
validate-collection-files (macos)	13s
lint (npm run lint:yaml, windows)	2m 18s
validate-collection-files (ubuntu)	12s
lint (npm run lint:md, macos)	41s
lint (npm run lint:md, ubuntu)	27s
lint (npm run lint:md, windows)	5m 5s
validate-collection-files (windows)	37s
lint (npm run lint:md:relative-urls, macos)	40s
lint (npm run lint:md:relative-urls, ubuntu)	28s
lint (npm run lint:md:relative-urls, windows)	4m 37s
lint (npm run lint:md:consistency, macos)	45s
lint (npm run lint:md:consistency, ubuntu)	30s
lint (npm run lint:md:consistency, windows)	1m 54s
	25m 40s

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