Merge branch 'improvement/navigation-merged' into improvement/search-button-merged

# Conflicts:
#	_layouts/default.html

_sass/base.scss

@@ -88,7 +88,8 @@ code {
   line-height: $body-line-height;
 }
 
-figure {
+figure,
+pre {
   margin: 0;
 }
 

_sass/content.scss

@@ -116,26 +116,37 @@
 
   .anchor-heading {
     position: absolute;
-    right: -$sp-3;
+    right: -$sp-4;
     width: $sp-5;
     height: 100%;
+    padding-right: $sp-1;
+    padding-left: $sp-1;
     overflow: visible;
-    fill: $link-color;
-    visibility: hidden;
 
     @include mq(md) {
       right: auto;
       left: -$sp-5;
     }
+
+    svg {
+      display: inline-block;
+      width: 100%;
+      height: 100%;
+      fill: $link-color;
+      visibility: hidden;
+    }
   }
 
+  .anchor-heading:hover,
   h1:hover > .anchor-heading,
   h2:hover > .anchor-heading,
   h3:hover > .anchor-heading,
   h4:hover > .anchor-heading,
   h5:hover > .anchor-heading,
   h6:hover > .anchor-heading {
-    visibility: visible;
+    svg {
+      visibility: visible;
+    }
   }
 
   h1,

_sass/layout.scss

@@ -123,12 +123,12 @@
 
 .site-header {
   display: flex;
+  min-height: $header-height;
   align-items: center;
 
   @include mq(md) {
     z-index: 101;
     height: $header-height;
-    min-height: $header-height;
     max-height: $header-height;
     border-bottom: $border $border-color;
   }
@@ -140,10 +140,26 @@
   display: flex;
   height: 100%;
   align-items: center;
-  padding-top: $gutter-spacing-sm;
-  padding-bottom: $gutter-spacing-sm;
+  padding-top: $sp-3;
+  padding-bottom: $sp-3;
   color: $body-heading-color;
   @include fs-6;
+
+  @include mq(md) {
+    padding-top: $sp-2;
+    padding-bottom: $sp-2;
+  }
+}
+
+@if variable-exists(logo) {
+  .site-logo {
+    width: 100%;
+    height: 100%;
+    background-image: url($logo);
+    background-repeat: no-repeat;
+    background-position: left center;
+    background-size: contain;
+  }
 }
 
 .site-button {

_sass/overrides.scss

@@ -0,0 +1,3 @@
+//
+// Custom overrides from a user.
+//

_sass/utilities/_lists.scss

@@ -2,10 +2,16 @@
 // Utility classes for lists
 //
 
-// stylelint-disable primer/selector-no-utility, primer/no-override
+// stylelint-disable primer/selector-no-utility, primer/no-override, selector-max-type
 
 .list-style-none {
   padding: 0 !important;
   margin: 0 !important;
   list-style: none !important;
+
+  li {
+    &::before {
+      display: none !important;
+    }
+  }
 }