chore: update code style config

.browserslistrc

@@ -0,0 +1,5 @@
+# https://github.com/browserslist/browserslist#browserslistrc
+
+last 2 versions
+> 0.2%
+not dead

.editorconfig

@@ -9,8 +9,11 @@ trim_trailing_whitespace = true
 end_of_line = lf
 insert_final_newline = true
 
-[*.js]
-indent_size = 4
+[*.{js,css,scss}]
+quote_type = single
+
+[*.{yml,yaml}]
+quote_type = double
 
 [*.md]
 trim_trailing_whitespace = false

.prettierrc

@@ -0,0 +1,3 @@
+{
+  "trailingComma": "none"
+}

.stylelintrc.json

@@ -11,6 +11,11 @@
     "alpha-value-notation": "number",
     "selector-not-notation": "simple",
     "color-hex-length": "long",
-    "declaration-block-single-line-max-declarations": 3
+    "declaration-block-single-line-max-declarations": 3,
+    "scss/operator-no-newline-after": null,
+    "rule-empty-line-before": [
+      "always",
+      { "ignore": ["after-comment", "first-nested", "inside-block"] }
+    ]
   }
 }