diff --git a/ui/scss/component/_form-field.scss b/ui/scss/component/_form-field.scss
index ffbe29d27..7095bc52d 100644
--- a/ui/scss/component/_form-field.scss
+++ b/ui/scss/component/_form-field.scss
@@ -459,3 +459,8 @@ fieldset-section {
     }
   }
 }
+
+#automatic_dark_mode_range_start,
+#automatic_dark_mode_range_end {
+  min-width: 6em;
+}