diff --git a/src/pages/robots.txt b/src/pages/robots.txt
index 99915e04a..d3d86b04a 100644
--- a/src/pages/robots.txt
+++ b/src/pages/robots.txt
@@ -1,4 +1,4 @@
 ---
 layout: none
 ---
-Sitemap: {{ "sitemap.xml" | absolute_url }}
+Sitemap: {% if jekyll.environment == 'preview' %}{{ site.preview-url }}{% endif %}{{ "sitemap.xml" | absolute_url }}
diff --git a/src/scss/ui/_nav.scss b/src/scss/ui/_nav.scss
index a419e3c48..0305a2cda 100644
--- a/src/scss/ui/_nav.scss
+++ b/src/scss/ui/_nav.scss
@@ -92,7 +92,7 @@
 .nav-link-icon {
   width: 1.5rem;
   height: $icon-size;
-  margin-inline-end: .5rem;
+  margin-inline-end: .25rem;
   opacity: $text-muted-opacity;
 
   svg {
diff --git a/src/static/og.png b/src/static/og.png
index fffbf07e8..bc3b7de2c 100644
Binary files a/src/static/og.png and b/src/static/og.png differ