Pseudo classes cannot have a space after the : char

Author: raxbg

src/Property/Selector.php

@@ -46,7 +46,7 @@ class Selector
         /ix';
 
     /**
-     * regexp for specificity calculations
+     * regexp for validity verifications
      *
      * @var string
      *
@@ -79,7 +79,7 @@ class Selector
      */
     public static function isValid($sSelector)
     {
-        return \preg_match(static::SELECTOR_VALIDATION_RX, $sSelector);
+        return \preg_match(static::SELECTOR_VALIDATION_RX, $sSelector) && \strpos($sSelector, ': ') === false;
     }
 
     /**

tests/ParserTest.php

@@ -787,6 +787,11 @@ public function invalidSelectorsInFile(): void
 	html[dir="rtl"] .super-menu > li:last-of-type {border-left-width: 0;}}
 body {background-color: red;}';
         self::assertSame($sExpected, $oDoc->render());
+
+        $oDoc = self::parsedStructureForFile('invalid-selectors-3', Settings::create()->withMultibyteSupport(true));
+        $sExpected = 'body, div :hover {color: green;}
+div {color: blue;}';
+        self::assertSame($sExpected, $oDoc->render());
     }
 
     /**

tests/fixtures/invalid-selectors-3.css

@@ -0,0 +1,15 @@
+body, div: hover {
+    color: green;
+}
+
+body, div : hover {
+    color: green;
+}
+
+body, div :hover {
+    color: green;
+}
+
+div {
+    color: blue;
+}