diff --git a/src/web/vaev-style/decls.h b/src/web/vaev-style/decls.h
index 2f87221..bd940ad 100644
--- a/src/web/vaev-style/decls.h
+++ b/src/web/vaev-style/decls.h
@@ -2,6 +2,8 @@
 
 #include <vaev-css/parser.h>
 
+#include "base.h"
+
 namespace Vaev::Style {
 
 template <typename T>
@@ -36,7 +38,7 @@ Res<P> parseDeclaration(Css::Sst const &sst) {
         auto res = parseDeclarationValue<T>(cursor);
         if (not res) {
             resDecl = res.none();
-            return false;
+            return true;
         }
 
         resDecl = Ok(res.take());
@@ -46,6 +48,11 @@ Res<P> parseDeclaration(Css::Sst const &sst) {
                 resDecl.unwrap().important = Important::YES;
         }
 
+        eatWhitespace(cursor);
+        if (not cursor.ended()) 
+            resDecl =  Error::invalidData("unknown tokens in content");
+        
+
         return true;
     });