diff --git a/web/styles/modal.css b/web/styles/modal.css
index 539c23be45..c8dbdfeada 100644
--- a/web/styles/modal.css
+++ b/web/styles/modal.css
@@ -445,7 +445,7 @@
 #add-poll-modal {
     /* this height allows 3-4 option rows
     to fit in without need for scrolling */
-    height: 450px;
+    height: 32.1428em; /* 450px / 14px em */
     overflow: hidden;
 
     .modal__content {