diff --git a/sass/style.scss b/sass/style.scss
index bde17dce..a221f854 100644
--- a/sass/style.scss
+++ b/sass/style.scss
@@ -123,3 +123,11 @@
     margin-top: -4rem;
   }
 }
+
+.mouse {
+  &__action {
+    &--type {
+      border-right: 1px solid #000;
+    }
+  }
+}