diff --git a/static/css/ping_details.css b/static/css/ping_details.css
index 226ae6d4..11680b5d 100644
--- a/static/css/ping_details.css
+++ b/static/css/ping_details.css
@@ -24,6 +24,7 @@
     padding: 16px;
     margin: 0;
     max-height: 500px;
+    line-height: 1em;
 }
 
 #email-body-html-iframe {