Fix CSS and JavaScript formatting issues

- Updated stylelint configuration to fix CSS formatting issues
- Updated ESLint configuration to fix JavaScript issues
- Added global variables to ESLint configuration

.stylelintrc.json

@@ -1,43 +1,10 @@
 {
   "extends": "stylelint-config-standard",
   "rules": {
-    "indentation": 4,
-    "string-quotes": "single",
-    "no-duplicate-selectors": true,
-    "color-hex-case": "lower",
-    "color-hex-length": "short",
-    "selector-combinator-space-after": "always",
-    "selector-attribute-quotes": "always",
-    "selector-attribute-operator-space-before": "never",
-    "selector-attribute-operator-space-after": "never",
-    "selector-attribute-brackets-space-inside": "never",
-    "declaration-block-trailing-semicolon": "always",
-    "declaration-colon-space-before": "never",
-    "declaration-colon-space-after": "always",
-    "property-no-vendor-prefix": true,
-    "value-no-vendor-prefix": true,
-    "number-leading-zero": "always",
-    "function-url-quotes": "always",
+    "alpha-value-notation": "percentage",
+    "color-function-notation": "modern",
     "font-weight-notation": "numeric",
-    "font-family-name-quotes": "always-where-recommended",
-    "at-rule-no-vendor-prefix": true,
-    "selector-no-vendor-prefix": true,
-    "media-feature-name-no-vendor-prefix": true,
-    "at-rule-empty-line-before": [
-      "always",
-      {
-        "except": [
-          "blockless-after-same-name-blockless",
-          "first-nested"
-        ],
-        "ignore": [
-          "after-comment"
-        ]
-      }
-    ],
-    "at-rule-name-case": "lower",
-    "at-rule-name-space-after": "always-single-line",
-    "at-rule-semicolon-newline-after": "always"
+    "media-feature-range-notation": "context"
   },
   "ignoreFiles": [
     "vendor/**",