diff --git a/src/main/java/org/htmlunit/css/CssStyleSheet.java b/src/main/java/org/htmlunit/css/CssStyleSheet.java
index 96bf857a814..ec498915aef 100644
--- a/src/main/java/org/htmlunit/css/CssStyleSheet.java
+++ b/src/main/java/org/htmlunit/css/CssStyleSheet.java
@@ -158,10 +158,6 @@ public class CssStyleSheet implements Serializable {
     /** The HTML element which owns this stylesheet. */
     private final HtmlElement owner_;
 
-    /** The collection of rules defined in this style sheet. */
-    private org.htmlunit.javascript.host.css.CSSRuleList cssRules_;
-    private List<Integer> cssRulesIndexFix_;
-
     /** The CSS import rules and their corresponding stylesheets. */
     private final Map<CSSImportRuleImpl, CssStyleSheet> imports_ = new HashMap<>();
 
diff --git a/src/main/java/org/htmlunit/javascript/host/css/CSSStyleSheet.java b/src/main/java/org/htmlunit/javascript/host/css/CSSStyleSheet.java
index d72286ffebf..02d9a85497d 100644
--- a/src/main/java/org/htmlunit/javascript/host/css/CSSStyleSheet.java
+++ b/src/main/java/org/htmlunit/javascript/host/css/CSSStyleSheet.java
@@ -273,7 +273,7 @@ private void refreshCssRules() {
                 continue;
             }
 
-            final CSSRule cssRule = org.htmlunit.javascript.host.css.CSSRule.create(this, rule);
+            final CSSRule cssRule = CSSRule.create(this, rule);
             if (null == cssRule) {
                 cssRulesIndexFix_.add(pos);
             }
diff --git a/src/test/java/org/htmlunit/archunit/ArchitectureTest.java b/src/test/java/org/htmlunit/archunit/ArchitectureTest.java
index 520c194595a..959a5f8cad7 100644
--- a/src/test/java/org/htmlunit/archunit/ArchitectureTest.java
+++ b/src/test/java/org/htmlunit/archunit/ArchitectureTest.java
@@ -72,7 +72,6 @@ public class ArchitectureTest {
     public static final ArchRule awtPackageRule = noClasses()
         .that()
             .doNotHaveFullyQualifiedName("org.htmlunit.html.DoTypeProcessor")
-            .and().doNotHaveFullyQualifiedName("org.htmlunit.javascript.host.css.ComputedCSSStyleDeclaration")
             .and().doNotHaveFullyQualifiedName("org.htmlunit.html.applets.AppletContextImpl")
             .and().resideOutsideOfPackage("org.htmlunit.platform..")
             .and().resideOutsideOfPackage("org.htmlunit.corejs.javascript.tools..")