diff --git a/app/views/shared/_ruler.html.erb b/app/views/shared/_ruler.html.erb
new file mode 100644
index 00000000..6003fd1c
--- /dev/null
+++ b/app/views/shared/_ruler.html.erb
@@ -0,0 +1,2 @@
+<%# locals: (margins: nil) %>
+<hr class="border-divider <%= margins || 'mx-4' %>">