diff --git a/templates/custom/header.tmpl b/templates/custom/header.tmpl
index 013d748..072510e 100644
--- a/templates/custom/header.tmpl
+++ b/templates/custom/header.tmpl
@@ -46,6 +46,7 @@
   /* Bold is excessive on issue title when shown without details. */
   .issue-card-title {
     font-variation-settings: normal !important;
+    font-size: 16px;
   }
 
   .repository.view.issue .title .issue-title h1 {