diff --git a/README.adoc b/README.adoc
index 945bd15f..3db1456e 100644
--- a/README.adoc
+++ b/README.adoc
@@ -1,6 +1,6 @@
 = Couchbase Documentation UI
 // Variables:
-:current-release: prod-67
+:current-release: prod-68
 // Settings:
 :!example-caption:
 :experimental:
diff --git a/gulp.d/tasks/build-preview-pages.js b/gulp.d/tasks/build-preview-pages.js
index 7d2bcdd1..ae1f3fc6 100644
--- a/gulp.d/tasks/build-preview-pages.js
+++ b/gulp.d/tasks/build-preview-pages.js
@@ -1,5 +1,11 @@
 'use strict'
 
+// NOTE remove patch after upgrading from asciidoctor.js to @asciidoctor/core
+Error.call = (self, ...args) => {
+  const err = new Error(...args)
+  return Object.assign(self, { message: err.message, stack: err.stack })
+}
+
 const asciidoctor = require('asciidoctor.js')()
 const fs = require('fs-extra')
 const handlebars = require('handlebars')
diff --git a/src/css/doc.css b/src/css/doc.css
index 1dc6a2ed..9c2fb45a 100644
--- a/src/css/doc.css
+++ b/src/css/doc.css
@@ -444,6 +444,13 @@ ul ul ul {
   width: auto;
 }
 
+.doc span.image {
+  line-height: 1;
+  vertical-align: -0.5em;
+  display: inline-flex;
+  padding: 0 0.25ex;
+}
+
 .doc .quoteblock {
   margin-top: var(--base-medium-space);
 }
@@ -645,7 +652,7 @@ table.tableblock pre code.language-bash.hljs {
 }
 
 .doc .dlist dt + dd {
-  margin-top: var(--base-small-space);
+  margin-top: var(--base-extra-small-space);
 }
 
 /* .doc .dlist dd > .openblock > .content > :first-child {
diff --git a/src/css/nav.css b/src/css/nav.css
index a18ccf9b..0762cac6 100644
--- a/src/css/nav.css
+++ b/src/css/nav.css
@@ -115,31 +115,17 @@
 }
 
 .nav-menu .nav-item[data-depth='0'] > .nav-list {
-  /*
-  margin-top: -0.0625rem;
-  margin-bottom: 0.625rem;
-  */
   margin-bottom: 0.75rem;
-  /* margin-left: 1rem; */
-  /* border-left: 1px solid var(--color-brand-gray5); */
 }
 
-/* .nav-menu .nav-item.is-active.is-active-depth-2[data-depth='0']  >  .nav-list {
-  margin-left: 1.875rem;
-  border-left: none;
-} */
-
-/* .nav-menu .nav-item.is-active.is-active-depth-2[data-depth='0']  >  .nav-line {
-  display: none;
-} */
-
 .nav-menu .nav-item:not(.is-active) > .nav-list {
   display: none;
 }
 
-/* .nav-menu .nav-item {
-  margin-left: 0.75em;
-} */
+.nav-item[data-depth="1"] span.nav-line {
+  padding-top: var(--base-extra-small-space);
+  padding-bottom: var(--base-extra-small-space);
+}
 
 /* NOTE navigation list without a category */
 .nav-item[data-depth="0"] > .nav-list:first-child {