Allow navbar to be extended

_includes/header.html

 <!-- The page title -->
-<nav class="top-nav">
+<nav class="top-nav nav-extended">
   <div class="container">
     <div class="nav-wrapper">
       <a class="page-title">

public/css/main.css

@@ -62,7 +62,7 @@ nav, .side-nav .collapsible-body > ul:not(.collapsible) > li.active,
 
 /** sizing for navigation */
 nav.top-nav {
-  height: 122px;
+  min-height: 122px;
   box-shadow: none
 }
 
@@ -73,8 +73,7 @@ div.nav-wrapper {
 nav .nav-wrapper a.page-title {
   line-height: 122px;
   font-size: 48px;
-  height: 122px;
-  white-space: nowrap;
+  min-height: 122px;
 }
 
 @media only screen and (max-width: 992px) {
@@ -83,7 +82,7 @@ nav .nav-wrapper a.page-title {
   }
   nav .nav-wrapper a.page-title {
     font-size: 36px;
-    height: 36px;
+    min-height: 36px;
   }
 }