diff --git a/.editorconfig b/.editorconfig
index c010fb5..2181c9f 100644
--- a/.editorconfig
+++ b/.editorconfig
@@ -6,13 +6,11 @@ end_of_line = lf
 charset = utf-8
 trim_trailing_whitespace = true
 insert_final_newline = true
+max_line_length = 160
 
 [*.{md,yml}]
 indent_style = space
 indent_size = 2
 
-[*.{js,ts}]
-max_line_length = 160
-
 [*.md]
 trim_trailing_whitespace = false
diff --git a/.prettierrc b/.prettierrc
index cb29c10..191c568 100644
--- a/.prettierrc
+++ b/.prettierrc
@@ -1,9 +1,10 @@
 {
+	"singleQuote": true,
 	"overrides": [
 		{
-			"files": ["*.js", "*.ts"],
+			"files": ["*.css"],
 			"options": {
-				"singleQuote": true
+				"singleQuote": false
 			}
 		}
 	]
diff --git a/package.json b/package.json
index d94e8af..636e570 100644
--- a/package.json
+++ b/package.json
@@ -6,8 +6,7 @@
 		"packages/*"
 	],
 	"scripts": {
-		"js-format": "prettier -w packages/*/src/*.ts",
-		"html-format": "prettier -w packages/*/demo/*.html",
+		"format": "prettier -w packages/*/__tests__/*.test.js packages/*/demo/**/*.html packages/*/src/*.ts",
 		"html-lint": "markuplint -c .markuplintrc packages/*/demo/*.html",
 		"css-lint": "stylelint packages/*/demo/*.html",
 		"github-actions-lint": "yamllint .github/workflows/*.yml"
diff --git a/packages/button-share/__tests__/ButtonShare.test.js b/packages/button-share/__tests__/ButtonShare.test.js
index 277167d..b9c124c 100644
--- a/packages/button-share/__tests__/ButtonShare.test.js
+++ b/packages/button-share/__tests__/ButtonShare.test.js
@@ -22,6 +22,8 @@ describe('attribute', () => {
 
 		new ButtonShare(document.querySelector('.js-button-share'));
 
-		expect(document.body.innerHTML).toBe('<button class="js-button-share" data-text="Message text" data-title="Page title" data-url="/path/to" disabled="">Share</button>');
+		expect(document.body.innerHTML).toBe(
+			'<button class="js-button-share" data-text="Message text" data-title="Page title" data-url="/path/to" disabled="">Share</button>',
+		);
 	});
 });
diff --git a/packages/input-date-to-text/__tests__/InputDateToText.test.js b/packages/input-date-to-text/__tests__/InputDateToText.test.js
index 1512b1b..7c755f3 100644
--- a/packages/input-date-to-text/__tests__/InputDateToText.test.js
+++ b/packages/input-date-to-text/__tests__/InputDateToText.test.js
@@ -91,10 +91,7 @@ describe('attribute', () => {
 
 describe('change event', () => {
 	beforeEach(() => {
-		document.body.insertAdjacentHTML(
-			'beforeend',
-			'<input type="date" class="js-input-date-to-text" data-validation-noexist="This date does not exist.">',
-		);
+		document.body.insertAdjacentHTML('beforeend', '<input type="date" class="js-input-date-to-text" data-validation-noexist="This date does not exist.">');
 
 		new InputDateToText(document.querySelector('.js-input-date-to-text'));
 	});
@@ -153,10 +150,7 @@ describe('submit event', () => {
 
 describe('value pattern', () => {
 	beforeEach(() => {
-		document.body.insertAdjacentHTML(
-			'beforeend',
-			'<input type="date" class="js-input-date-to-text" data-validation-noexist="This date does not exist.">',
-		);
+		document.body.insertAdjacentHTML('beforeend', '<input type="date" class="js-input-date-to-text" data-validation-noexist="This date does not exist.">');
 
 		new InputDateToText(document.querySelector('.js-input-date-to-text'));
 	});