diff --git a/__tests__/index.test.js b/__tests__/index.test.js
index 8465541..42f1915 100644
--- a/__tests__/index.test.js
+++ b/__tests__/index.test.js
@@ -4,148 +4,152 @@ const config = require('../');
 const fs = require('fs');
 const stylelint = require('stylelint');
 
-describe('flags no warnings with valid css', () => {
-	const validCss = fs.readFileSync('./__tests__/valid.css', 'utf-8');
-	let result;
-
-	beforeEach(async () => {
-		result = await stylelint.lint({
-			code: validCss,
-			config,
+describe('css', () => {
+	describe('flags no warnings with valid css', () => {
+		const validCss = fs.readFileSync('./__tests__/valid.css', 'utf-8');
+		let result;
+
+		beforeEach(async () => {
+			result = await stylelint.lint({
+				code: validCss,
+				config,
+			});
 		});
-	});
 
-	it('did not error', () => {
-		expect(result.errored).toBe(false);
-	});
+		it('did not error', () => {
+			expect(result.errored).toBe(false);
+		});
 
-	it('flags no warnings', () => {
-		expect(result.results[0].warnings).toHaveLength(0);
+		it('flags no warnings', () => {
+			expect(result.results[0].warnings).toHaveLength(0);
+		});
 	});
-});
 
-describe('flags warnings with invalid css', () => {
-	const invalidCss = fs.readFileSync('./__tests__/invalid.css', 'utf-8');
-	let result;
+	describe('flags warnings with invalid css', () => {
+		const invalidCss = fs.readFileSync('./__tests__/invalid.css', 'utf-8');
+		let result;
 
-	beforeEach(async () => {
-		result = await stylelint.lint({
-			code: invalidCss,
-			config,
+		beforeEach(async () => {
+			result = await stylelint.lint({
+				code: invalidCss,
+				config,
+			});
 		});
-	});
 
-	it('did error', () => {
-		expect(result.errored).toBe(true);
-	});
+		it('did error', () => {
+			expect(result.errored).toBe(true);
+		});
 
-	it('flags warnings', () => {
-		expect(result.results[0].warnings).toHaveLength(5);
-	});
+		it('flags warnings', () => {
+			expect(result.results[0].warnings).toHaveLength(5);
+		});
 
-	it('correct warning text', () => {
-		expect(result.results[0].warnings.map((w) => w.text)).toEqual([
-			'Expected custom media query name "--FOO" to be kebab-case',
-			'Expected custom property name "--FOO" to be kebab-case',
-			'Expected keyframe name "FOO" to be kebab-case',
-			'Expected class selector ".FOO" to match BEM CSS pattern https://en.bem.info/methodology/css. Selector validation tool: https://regexr.com/3apms',
-			'Expected id selector "#FOO" to be kebab-case',
-		]);
-	});
+		it('correct warning text', () => {
+			expect(result.results[0].warnings.map((w) => w.text)).toEqual([
+				'Expected custom media query name "--FOO" to be kebab-case',
+				'Expected custom property name "--FOO" to be kebab-case',
+				'Expected keyframe name "FOO" to be kebab-case',
+				'Expected class selector ".FOO" to match BEM CSS pattern https://en.bem.info/methodology/css. Selector validation tool: https://regexr.com/3apms',
+				'Expected id selector "#FOO" to be kebab-case',
+			]);
+		});
 
-	it('correct rule flagged', () => {
-		expect(result.results[0].warnings.map((w) => w.rule)).toEqual([
-			'custom-media-pattern',
-			'custom-property-pattern',
-			'keyframes-name-pattern',
-			'selector-class-pattern',
-			'selector-id-pattern',
-		]);
-	});
+		it('correct rule flagged', () => {
+			expect(result.results[0].warnings.map((w) => w.rule)).toEqual([
+				'custom-media-pattern',
+				'custom-property-pattern',
+				'keyframes-name-pattern',
+				'selector-class-pattern',
+				'selector-id-pattern',
+			]);
+		});
 
-	it('correct severity flagged', () => {
-		expect(result.results[0].warnings[0].severity).toBe('error');
-	});
+		it('correct severity flagged', () => {
+			expect(result.results[0].warnings[0].severity).toBe('error');
+		});
 
-	it('correct line number', () => {
-		expect(result.results[0].warnings[0].line).toBe(5);
-	});
+		it('correct line number', () => {
+			expect(result.results[0].warnings[0].line).toBe(5);
+		});
 
-	it('correct column number', () => {
-		expect(result.results[0].warnings[0].column).toBe(15);
+		it('correct column number', () => {
+			expect(result.results[0].warnings[0].column).toBe(15);
+		});
 	});
 });
 
-describe('flags no warnings with valid scss', () => {
-	const validScss = fs.readFileSync('./__tests__/valid.scss', 'utf-8');
-	let result;
+describe('scss', () => {
+	describe('flags no warnings with valid scss', () => {
+		const validScss = fs.readFileSync('./__tests__/valid.scss', 'utf-8');
+		let result;
 
-	beforeEach(async () => {
-		result = await stylelint.lint({
-			code: validScss,
-			config,
+		beforeEach(async () => {
+			result = await stylelint.lint({
+				code: validScss,
+				config,
+			});
 		});
-	});
 
-	it('did not error', () => {
-		expect(result.errored).toBe(false);
-	});
+		it('did not error', () => {
+			expect(result.errored).toBe(false);
+		});
 
-	it('flags no warnings', () => {
-		expect(result.results[0].warnings).toHaveLength(0);
+		it('flags no warnings', () => {
+			expect(result.results[0].warnings).toHaveLength(0);
+		});
 	});
-});
 
-describe('flags warnings with invalid scss', () => {
-	const invalidScss = fs.readFileSync('./__tests__/invalid.scss', 'utf-8');
-	let result;
+	describe('flags warnings with invalid scss', () => {
+		const invalidScss = fs.readFileSync('./__tests__/invalid.scss', 'utf-8');
+		let result;
 
-	beforeEach(async () => {
-		result = await stylelint.lint({
-			code: invalidScss,
-			config,
+		beforeEach(async () => {
+			result = await stylelint.lint({
+				code: invalidScss,
+				config,
+			});
 		});
-	});
 
-	it('did error', () => {
-		expect(result.errored).toBe(true);
-	});
+		it('did error', () => {
+			expect(result.errored).toBe(true);
+		});
 
-	it('flags warnings', () => {
-		expect(result.results[0].warnings).toHaveLength(6);
-	});
+		it('flags warnings', () => {
+			expect(result.results[0].warnings).toHaveLength(6);
+		});
 
-	it('correct warning text', () => {
-		expect(result.results[0].warnings.map((w) => w.text)).toEqual([
-			'Expected custom media query name "--FOO" to be kebab-case',
-			'Expected custom property name "--FOO" to be kebab-case',
-			'Expected keyframe name "FOO" to be kebab-case',
-			'Expected class selector ".FOO" to match BEM CSS pattern https://en.bem.info/methodology/css. Selector validation tool: https://regexr.com/3apms',
-			'Expected class selector ".bem__not_bem" to match BEM CSS pattern https://en.bem.info/methodology/css. Selector validation tool: https://regexr.com/3apms',
-			'Expected id selector "#FOO" to be kebab-case',
-		]);
-	});
+		it('correct warning text', () => {
+			expect(result.results[0].warnings.map((w) => w.text)).toEqual([
+				'Expected custom media query name "--FOO" to be kebab-case',
+				'Expected custom property name "--FOO" to be kebab-case',
+				'Expected keyframe name "FOO" to be kebab-case',
+				'Expected class selector ".FOO" to match BEM CSS pattern https://en.bem.info/methodology/css. Selector validation tool: https://regexr.com/3apms',
+				'Expected class selector ".bem__not_bem" to match BEM CSS pattern https://en.bem.info/methodology/css. Selector validation tool: https://regexr.com/3apms',
+				'Expected id selector "#FOO" to be kebab-case',
+			]);
+		});
 
-	it('correct rule flagged', () => {
-		expect(result.results[0].warnings.map((w) => w.rule)).toEqual([
-			'custom-media-pattern',
-			'custom-property-pattern',
-			'keyframes-name-pattern',
-			'selector-class-pattern',
-			'selector-class-pattern',
-			'selector-id-pattern',
-		]);
-	});
+		it('correct rule flagged', () => {
+			expect(result.results[0].warnings.map((w) => w.rule)).toEqual([
+				'custom-media-pattern',
+				'custom-property-pattern',
+				'keyframes-name-pattern',
+				'selector-class-pattern',
+				'selector-class-pattern',
+				'selector-id-pattern',
+			]);
+		});
 
-	it('correct severity flagged', () => {
-		expect(result.results[0].warnings[0].severity).toBe('error');
-	});
+		it('correct severity flagged', () => {
+			expect(result.results[0].warnings[0].severity).toBe('error');
+		});
 
-	it('correct line number', () => {
-		expect(result.results[0].warnings[0].line).toBe(5);
-	});
+		it('correct line number', () => {
+			expect(result.results[0].warnings[0].line).toBe(5);
+		});
 
-	it('correct column number', () => {
-		expect(result.results[0].warnings[0].column).toBe(15);
+		it('correct column number', () => {
+			expect(result.results[0].warnings[0].column).toBe(15);
+		});
 	});
 });