diff --git a/lib/rdoc/generator/template/darkfish/css/rdoc.css b/lib/rdoc/generator/template/darkfish/css/rdoc.css
index 27b2c0ea59..a2aab06cb3 100644
--- a/lib/rdoc/generator/template/darkfish/css/rdoc.css
+++ b/lib/rdoc/generator/template/darkfish/css/rdoc.css
@@ -37,10 +37,6 @@ body {
   margin: 0;
 }
 
-body > :last-child {
-  width: 100%;
-}
-
 /* 3. Typography */
 h1 span,
 h2 span,
@@ -255,7 +251,7 @@ nav ul li details[open] > summary::after {
 main {
   flex: 1;
   display: block;
-  margin: 2em auto;
+  margin: 3em auto;
   padding: 0 2em;
   max-width: 800px;
   font-size: 16px;