diff --git a/modern-normalize.css b/modern-normalize.css
index ba77c8c..e5fac80 100644
--- a/modern-normalize.css
+++ b/modern-normalize.css
@@ -40,21 +40,6 @@ body {
 	margin: 0; /* Remove the margin in all browsers. */
 }
 
-/*
-Grouping content
-================
-*/
-
-/**
-1. Add the correct height in Firefox.
-2. Correct the inheritance of border color in Firefox. (https://bugzilla.mozilla.org/show_bug.cgi?id=190655)
-*/
-
-hr {
-	height: 0; /* 1 */
-	color: inherit; /* 2 */
-}
-
 /*
 Text-level semantics
 ====================
diff --git a/test/acceptance/chrome/rules.ts b/test/acceptance/chrome/rules.ts
index f57644d..2f87ad1 100644
--- a/test/acceptance/chrome/rules.ts
+++ b/test/acceptance/chrome/rules.ts
@@ -37,7 +37,7 @@ test('Improve consistency of default fonts in all browsers.', async t => {
 		.expect(Selector('body').getStyleProperty('font-family')).eql(`system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji"`);
 });
 
-test('Add the correct height in Firefox.', async t => {
+test('<hr> should be the correct height.', async t => {
 	await t
 		.expect(Selector('hr[data-test--hr]').getStyleProperty('height')).eql('2px');
 });
diff --git a/test/acceptance/chrome/validation.ts b/test/acceptance/chrome/validation.ts
index bbf4b13..705ea23 100644
--- a/test/acceptance/chrome/validation.ts
+++ b/test/acceptance/chrome/validation.ts
@@ -37,7 +37,7 @@ test('Improve consistency of default fonts in all browsers.', async t => {
 		.expect(Selector('body').getStyleProperty('font-family')).notEql('system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji"');
 });
 
-test('Add the correct height in Firefox.', async t => {
+test('<hr> should be the correct height.', async t => {
 	await t
 		.expect(Selector('hr[data-test--hr]').getStyleProperty('height')).notEql('2px');
 });
diff --git a/test/acceptance/firefox/rules.ts b/test/acceptance/firefox/rules.ts
index b1d3702..d7ef00a 100644
--- a/test/acceptance/firefox/rules.ts
+++ b/test/acceptance/firefox/rules.ts
@@ -37,7 +37,7 @@ test('Improve consistency of default fonts in all browsers.', async t => {
 		.expect(Selector('body').getStyleProperty('font-family')).eql(`system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji"`);
 });
 
-test('Add the correct height in Firefox.', async t => {
+test('<hr> should be the correct height.', async t => {
 	await t
 		.expect(Selector('hr[data-test--hr]').getStyleProperty('height')).eql('2px');
 });
diff --git a/test/acceptance/firefox/validation.ts b/test/acceptance/firefox/validation.ts
index 3971799..54cbd63 100644
--- a/test/acceptance/firefox/validation.ts
+++ b/test/acceptance/firefox/validation.ts
@@ -37,7 +37,7 @@ test('Improve consistency of default fonts in all browsers.', async t => {
 		.expect(Selector('body').getStyleProperty('font-family')).notEql('system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji"');
 });
 
-test('Add the correct height in Firefox.', async t => {
+test('<hr> should be the correct height.', async t => {
 	await t
 		.expect(Selector('hr[data-test--hr]').getStyleProperty('height')).notEql('2px');
 });
diff --git a/test/acceptance/safari/rules.ts b/test/acceptance/safari/rules.ts
index 6c2826f..35175d9 100644
--- a/test/acceptance/safari/rules.ts
+++ b/test/acceptance/safari/rules.ts
@@ -38,7 +38,7 @@ test('Improve consistency of default fonts in all browsers.', async t => {
 		.expect(Selector('body').getStyleProperty('font-family')).eql(`system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji"`);
 });
 
-test('Add the correct height in Firefox.', async t => {
+test('<hr> should be the correct height.', async t => {
 	await t
 		.expect(Selector('hr[data-test--hr]').getStyleProperty('height')).eql('2px');
 });
diff --git a/test/acceptance/safari/validation.ts b/test/acceptance/safari/validation.ts
index 5e28757..58c465b 100644
--- a/test/acceptance/safari/validation.ts
+++ b/test/acceptance/safari/validation.ts
@@ -38,7 +38,7 @@ test('Improve consistency of default fonts in all browsers.', async t => {
 		.expect(Selector('body').getStyleProperty('font-family')).notEql('system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji"');
 });
 
-test('Add the correct height in Firefox.', async t => {
+test('<hr> should be the correct height.', async t => {
 	await t
 		.expect(Selector('hr[data-test--hr]').getStyleProperty('height')).notEql('2px');
 });