Merge pull request #2239 from WPO-Foundation/stylelint

Hello Stylelint

.stylelintignore

@@ -0,0 +1,2 @@
+www/chrome
+www/css/vendor

.stylelintrc

@@ -0,0 +1,44 @@
+{
+  "rules": {
+    "at-rule-no-unknown": true,
+    "block-no-empty": true,
+    "color-no-invalid-hex": true,
+    "comment-no-empty": true,
+    "custom-property-no-missing-var-function": true,
+    "declaration-block-no-duplicate-custom-properties": true,
+    "declaration-block-no-duplicate-properties": [
+      true,
+      {
+        "ignore": ["consecutive-duplicates-with-different-values"]
+      }
+    ],
+    "declaration-block-no-shorthand-property-overrides": true,
+    "font-family-no-duplicate-names": true,
+    "font-family-no-missing-generic-family-keyword": true,
+    "function-calc-no-unspaced-operator": true,
+    "function-linear-gradient-no-nonstandard-direction": true,
+    "function-no-unknown": true,
+    "keyframe-block-no-duplicate-selectors": true,
+    "keyframe-declaration-no-important": true,
+    "media-feature-name-no-unknown": true,
+    "named-grid-areas-no-invalid": true,
+    "no-duplicate-at-import-rules": true,
+    "no-duplicate-selectors": true,
+    "no-empty-source": true,
+    "no-extra-semicolons": true,
+    "no-invalid-double-slash-comments": true,
+    "no-invalid-position-at-import-rule": true,
+    "no-irregular-whitespace": true,
+    "property-no-unknown": true,
+    "selector-pseudo-class-no-unknown": true,
+    "selector-pseudo-element-no-unknown": true,
+    "selector-type-no-unknown": [
+      true,
+      {
+        "ignore": ["custom-elements"]
+      }
+    ],
+    "string-no-newline": true,
+    "unit-no-unknown": true
+  }
+}

composer.json

@@ -12,6 +12,7 @@
     "format:php": "phpcbf --extensions=php,inc --standard=PSR12 --ignore=www/lib/,www/ec2/,www/resources/compiled www/ tests/ bulktest/",
     "format:prettier": "npx prettier@2.7.1 --write 'www/**/*.css' 'www/**/*.js'",
     "format": "composer format:php && composer format:prettier",
+    "lint:css": "npx stylelint@14.9.1 'www/**/*.css'",
     "lint": "phpcs --standard=PSR12 www/src www/cpauth www/common",
     "pre-autoload-dump": "Google\\Task\\Composer::cleanup",
     "test": "phpunit --configuration tests/phpunit.xml"

www/pagestyle2.css

@@ -6399,7 +6399,6 @@ th.header {
   font-weight: bold;
 }
 
-*/
 /* visual comparison page */
 
 #visual_comparison .industry {