diff --git a/sass/understrap/understrap.scss b/sass/understrap/understrap.scss
index 1ab9c3c..a9f4869 100644
--- a/sass/understrap/understrap.scss
+++ b/sass/understrap/understrap.scss
@@ -40,6 +40,13 @@
 
 .aligncenter { @extend .mx-auto; }
 
+.widget_categories,
+.widget_archive {
+	select { 
+		@extend .form-control;
+	}
+}
+
 // Post design
 .entry-footer span { padding-right: 10px; }