diff --git a/wowchemy/assets/scss/wowchemy/_book.scss b/wowchemy/assets/scss/wowchemy/_book.scss
index 862b7fe7..7d493610 100644
--- a/wowchemy/assets/scss/wowchemy/_book.scss
+++ b/wowchemy/assets/scss/wowchemy/_book.scss
@@ -42,6 +42,10 @@
   margin-right: -15px;
   margin-left: -15px;
   border-bottom: 1px solid rgba(0, 0, 0, 0.05);
+
+  @include media-breakpoint-down(sm) {
+    padding: 0.8rem 15px;
+  }
 }
 
 .docs-search .form-control:focus {
@@ -127,7 +131,7 @@
 /* Docs links. */
 
 .docs-toggle {
-  line-height: 1;
+  line-height: 1.5;
   font-size: 1.2rem;
   color: $sta-primary;
   background-color: transparent;
diff --git a/wowchemy/layouts/partials/site_head.html b/wowchemy/layouts/partials/site_head.html
index b29629b8..0095b83b 100644
--- a/wowchemy/layouts/partials/site_head.html
+++ b/wowchemy/layouts/partials/site_head.html
@@ -158,6 +158,9 @@
     {{- $style = $style | minify -}}
   {{- end -}}
   {{ $style := slice $css_bundle_head $style | resources.Concat "css/wowchemy.css" }}
+  {{- if eq (getenv "WC_POST_CSS") "true" -}}
+    {{- $style = $style | postCSS -}}
+  {{- end -}}
   {{- if eq hugo.Environment "production" -}}
     {{- $style = $style | fingerprint "md5" -}}
   {{- end -}}