diff --git a/assets/scss/base.scss b/assets/scss/base.scss
index 5546b44..052d514 100644
--- a/assets/scss/base.scss
+++ b/assets/scss/base.scss
@@ -11,7 +11,8 @@
 
 
 ::selection {
-  background: var(--base0F);
+  background: var(--base05);
+  color: var(--base00);
 }
 
 body {
@@ -87,6 +88,7 @@ code, pre {
 }
 
 code {
+  background: var(--base01);
   font-family: var(--mono-family);
   font-size: 0.9em;
 }
@@ -108,8 +110,9 @@ code[class*=language-]::selection,
 code[class*=language-] ::selection,
 pre[class*=language-]::selection,
 pre[class*=language-] ::selection {
-  background: var(--base01);
+  background: var(--base02);
   font-size: var(--mono-font-size);
+  color: unset;
 }
 
 mark {
@@ -123,6 +126,7 @@ mark {
 
 hr {
   border-color: var(--base0C);
+  margin: 1em 0;
 }
 
 
@@ -210,8 +214,6 @@ footer {
   flex-flow: column wrap;
   justify-content: space-evenly;
   text-align: center;
-
-
 }
 
 
diff --git a/assets/scss/layout.scss b/assets/scss/layout.scss
index 52990c5..900f52c 100644
--- a/assets/scss/layout.scss
+++ b/assets/scss/layout.scss
@@ -1,4 +1,4 @@
-nav[aria-label="Primary navigation"] {
+nav[aria-label="Site header"] {
   @include header-link-hover-style;
 
   a {
diff --git a/assets/scss/main.scss b/assets/scss/main.scss
index 78ea5ce..979fe55 100644
--- a/assets/scss/main.scss
+++ b/assets/scss/main.scss
@@ -26,13 +26,6 @@ $tablet-breakpoint: 860px;
   padding: 0;
 }
 
-@function decToHex($dec) {
-    $hex: "0123456789ABCDEF";
-    $first: (($dec - $dec % 16)/16)+1;
-    $second: ($dec % 16)+1;
-    @return str-slice($hex, $first, $first) + str-slice($hex, $second, $second)
-}
-
 @mixin header-link-hover-style {
   > *:hover {
     color: var(--base0C);
diff --git a/layouts/partials/header.html b/layouts/partials/header.html
index ffef595..3c78679 100644
--- a/layouts/partials/header.html
+++ b/layouts/partials/header.html
@@ -1,4 +1,4 @@
-<nav aria-label="Primary navigation">
+<nav aria-label="Site header">
   <a class="site__title" href="{{ "" | absLangURL }}">{{ $.Site.Title }}</a>
   <div class="list site__links">
     {{ with $.Site.Menus.main }}