--- a/rst.css	Fri Aug 14 12:31:34 2015 +0300
+++ b/rst.css	Fri Aug 14 12:36:41 2015 +0300
@@ -1,5 +1,9 @@
 body, frameset { background-color: ivory; }
-body { padding: 0 10% 0 10%; }
+body {
+    padding: 0 10px 0 10px;
+    max-width: 800px;
+    margin: 0 auto 0 auto;
+}
 a { text-decoration:none; }
 a:link { color: brown; }
 a:visited { color: IndianRed; }