Improved navigation

assets/sass/style.sass

@@ -8,7 +8,10 @@ body
   font-size: 81.25%
 
 nav
+  position: sticky
+  top: 0
   background: #607D8B
+  box-shadow: 0 2px 4px rgba(33, 33, 33, 0.4)
 
 nav ul
   display: flex
@@ -22,7 +25,7 @@ nav ul
   li
     display: block
     line-height: 24px
-    &.title
+    &.title, &.title > *
       font-size: 24px
       color: #FFC107
       font-weight: 700