diff --git a/theme/css/chrome.css b/theme/css/chrome.css
index 31b5856eb8..552400b9fa 100644
--- a/theme/css/chrome.css
+++ b/theme/css/chrome.css
@@ -277,6 +277,7 @@ pre > .buttons button {
 }
 pre > code {
   padding: 1rem;
+  line-height: normal;
 }
 
 /* FIXME: ACE editors overlap their buttons because ACE does absolute