fixed styling issue of the button

Former-commit-id: 714b52e4f3552c3c1eb889f2c1688bb8cb35c3ca

extension/ui/pages/pendings.css

@@ -92,6 +92,8 @@ header button {
 
 .result-cancel button {
     background-color: #fbfbfb;
+    width: 19px;
+    padding: 0;
 }
 
 .no-result {