diff --git a/agaric/sass/agaric/_component.titlebar.scss b/agaric/sass/agaric/_component.titlebar.scss
index 638229f..ccc19b7 100644
--- a/agaric/sass/agaric/_component.titlebar.scss
+++ b/agaric/sass/agaric/_component.titlebar.scss
@@ -52,6 +52,14 @@
   margin-top: 1.5rem;
 }
 
-.header-search .form-text.input {
-  width: 25em;
+.header-search {
+  .form-submit.button {
+    @include control-medium;
+  }
+  .form-text.input {
+    @include control-medium;
+    @include tablet {
+      width: 20em;
+    }
+  }
 }