added print styles

public/css/main.css

@@ -236,3 +236,33 @@ footer .skype {
         display: inline;
     }
 }
+
+/* for print support */
+@media print {
+    nav, footer {
+        display: none;
+    }
+    p, ul, ol, li {
+        orphans: 5;
+        widows: 3;
+    }
+    ul, ol, blockquote, pre, code {
+        page-break-inside: avoid;
+    }
+    h2, h3, h4 {
+        page-break-after: avoid;
+    }
+    html {
+        font-size: 1em;
+    }
+    body {
+        background: white;
+    }
+    .content {
+        background: transparent;
+    }
+    p a[href^="http"]:after, li a[href^="http"]:after {
+        content: " (" attr(href) ")";
+    }
+}
+