diff --git a/src/librustdoc/html/layout.rs b/src/librustdoc/html/layout.rs
index 06a816412969b..d6033a69da786 100644
--- a/src/librustdoc/html/layout.rs
+++ b/src/librustdoc/html/layout.rs
@@ -54,7 +54,7 @@ r##"<!DOCTYPE html>
     {favicon}
     {in_header}
 </head>
-<body class="rustdoc">
+<body class="rustdoc {css_class}">
     <!--[if lte IE 8]>
     <div class="warning">
         This old browser is unsupported and will most likely display funky
@@ -80,7 +80,7 @@ r##"<!DOCTYPE html>
         </form>
     </nav>
 
-    <section id='main' class="content {css_class}">{content}</section>
+    <section id='main' class="content">{content}</section>
     <section id='search' class="content hidden"></section>
 
     <section class="footer"></section>
diff --git a/src/librustdoc/html/static/rustdoc.css b/src/librustdoc/html/static/rustdoc.css
index 3df120eece9c5..4edf6309346ac 100644
--- a/src/librustdoc/html/static/rustdoc.css
+++ b/src/librustdoc/html/static/rustdoc.css
@@ -141,7 +141,7 @@ pre {
 	padding: 14px;
 }
 
-.source pre {
+.source .content pre {
 	padding: 20px;
 }
 
@@ -149,7 +149,7 @@ img {
 	max-width: 100%;
 }
 
-.content.source {
+.source .content {
 	margin-top: 50px;
 	max-width: none;
 	overflow: visible;
@@ -231,7 +231,7 @@ nav.sub {
 	padding: 15px 0;
 }
 
-.content.source pre.rust {
+.source .content pre.rust {
 	white-space: pre;
 	overflow: auto;
 	padding-left: 0;
diff --git a/src/librustdoc/html/static/styles/main.css b/src/librustdoc/html/static/styles/main.css
index 74ec3691b3860..c03101990885a 100644
--- a/src/librustdoc/html/static/styles/main.css
+++ b/src/librustdoc/html/static/styles/main.css
@@ -45,6 +45,10 @@ pre {
 	background-color: #fff;
 }
 
+.source .sidebar {
+	background-color: #fff;
+}
+
 .sidebar .location {
 	border-color: #000;
 	background-color: #fff;
