margin tweak to keep list delimiters inside of slide box when text is long (#116)

css/main.css

@@ -129,7 +129,7 @@ body {
 	display: inline-block;
 
 	text-align: left;
-	margin: 0 auto;
+	margin: 0 0 0 1em;
 }
 
 .reveal ol {