diff --git a/input.css b/input.css
index a5e84f60..0acc272a 100644
--- a/input.css
+++ b/input.css
@@ -124,6 +124,19 @@
           dark:text-gray-100 dark:before:bg-gray-800 dark:before:border-gray-700;
         }
 
+        .btn-flat {
+          @apply relative z-10 inline-flex min-h-[30px] cursor-pointer items-center justify-center
+          bg-transparent px-2 pb-[0.2rem] text-sm text-gray-900
+          before:absolute before:inset-0 before:-z-10 before:block before:rounded
+          before:border before:border-gray-200 before:bg-white
+          before:content-[''] before:transition-all before:duration-150 before:ease-in-out
+          hover:before:bg-gray-50
+          dark:hover:before:bg-gray-700
+          focus:outline-none focus-visible:before:outline focus-visible:before:outline-2 focus-visible:before:outline-gray-400
+          disabled:cursor-not-allowed disabled:opacity-50
+          dark:text-gray-100 dark:before:bg-gray-800 dark:before:border-gray-700;
+        }
+
         .btn-create {
             @apply btn text-white
           before:bg-green-600 hover:before:bg-green-700