One thing worth mentioning in passing is that we're going to be using

Lift's XML input, but its HTML5 output. We do care about valid output,
but we gain a bit of flexibility from allowing the main Lift templates
from being XML. Sometimes we don't want a wrapping HTML container just
so we can invoke a Lift snippet or what have you.

src/main/scala/bootstrap/liftweb/Boot.scala

@@ -19,6 +19,8 @@ class Boot {
     // where to search for snippets
     LiftRules.addToPackages("com.withoutincident")
 
+    LiftRules.htmlProperties.default.set { r:Req => new XHtmlInHtml5OutProperties(r.userAgent) }
+
     // Build SiteMap
     val entries = List(
       Menu.i("Home") / "index" // the simple way to declare a menu