1 files changed, 1 insertions, 0 deletions

diff --git a/intro.css b/intro.css
index ebc4642..d0761e5 100644
--- a/intro.css
+++ b/intro.css
@@ -13,6 +13,7 @@
 
 #content
 {   
+  max-width: 43.6em;
   padding-left: 3em; /* Reserve for headings. */
 }