feat(css/ast): Make AST intuitive

crates/swc_css_ast/src/base.rs

@@ -126,13 +126,15 @@ pub enum ComponentValue {
     #[tag("SimpleBlock")]
     SimpleBlock(Box<SimpleBlock>),
 
-    // Block Contents grammar
-    #[tag("DeclarationOrAtRule")]
-    DeclarationOrAtRule(Box<DeclarationOrAtRule>),
-    #[tag("Rule")]
-    Rule(Box<Rule>),
-    #[tag("StyleBlock")]
-    StyleBlock(Box<StyleBlock>),
+    #[tag("AtRule")]
+    AtRule(Box<AtRule>),
+
+    #[tag("QualifiedRule")]
+    QualifiedRule(Box<QualifiedRule>),
+
+    #[tag("ListOfComponentValues")]
+    ListOfComponentValues(Box<ListOfComponentValues>),
+
     #[tag("KeyframeBlock")]
     KeyframeBlock(Box<KeyframeBlock>),