Add navbar component, Fix JS highlight

sass/base/generic.sass

@@ -69,7 +69,7 @@ input[type="radio"]
   vertical-align: baseline
 
 small
-  font-size: 0.8em
+  font-size: 0.875em
 
 span
   font-style: inherit

sass/components/navbar.sass

@@ -11,6 +11,7 @@ $navbar-dropdown-border: $border !default
 $navbar-dropdown-offset: -4px !default
 $navbar-dropdown-arrow: $link !default
 $navbar-dropdown-radius: $radius-large !default
+$navbar-dropdown-z: 20 !default
 
 $navbar-dropdown-item-hover-background: $background !default
 $navbar-dropdown-item-active: $primary !default
@@ -156,10 +157,12 @@ a.navbar-item,
     min-width: 100%
     position: absolute
     top: 100%
-    z-index: 20
+    z-index: $navbar-dropdown-z
     .navbar-item
       padding: 0.375rem 1rem
       white-space: nowrap
+    a.navbar-item
+      padding-right: 3rem
     &.is-boxed
       border-radius: $navbar-dropdown-radius
       border-top: none

sass/elements/content.sass

@@ -54,12 +54,10 @@
   ol
     list-style: decimal outside
     margin-left: 2em
-    margin-right: 2em
     margin-top: 1em
   ul
     list-style: disc outside
     margin-left: 2em
-    margin-right: 2em
     margin-top: 1em
     ul
       list-style-type: circle
@@ -67,22 +65,22 @@
       ul
         list-style-type: square
   dd
-    margin-left: 2em
-  figure
-    text-align: center
-    img
-      display: inline-block
-    figcaption
-      font-style: italic
-  pre
+    margin-left: 2em
+  figure
+    text-align: center
+    img
+      display: inline-block
+    figcaption
+      font-style: italic
+  pre
     +overflow-touch
     overflow-x: auto
     padding: 1.25em 1.5em
     white-space: pre
-    word-wrap: normal
-  sup,
-  sub
-    font-size: 70%
+    word-wrap: normal
+  sup,
+  sub
+    font-size: 70%
   table
     width: 100%
     td,