diff --git a/_sass/90s/_base.scss b/_sass/90s/_base.scss
index a0a2e81..ef09e27 100644
--- a/_sass/90s/_base.scss
+++ b/_sass/90s/_base.scss
@@ -4,7 +4,7 @@
 pre,
 code {
   font-size: 15px;
-  border: 1px solid #fff;
+  border: 1px solid #000;
   border-radius: 3px;
   background-color: #eef;
 }
diff --git a/_sass/90s/_layout.scss b/_sass/90s/_layout.scss
index fecd9fb..889df3c 100644
--- a/_sass/90s/_layout.scss
+++ b/_sass/90s/_layout.scss
@@ -2,8 +2,8 @@
  * Site header
  */
 .site-header {
-  border-top: 5px solid #fff;
-  border-bottom: 1px solid #fff;
+  border-top: 5px solid #000;
+  border-bottom: 1px solid #000;
   min-height: 56px;
 
   // Positioning context for the mobile navigation icon
@@ -31,7 +31,7 @@
     position: absolute;
     top: 9px;
     right: $spacing-unit / 2;
-    border: 1px solid #fff;
+    border: 1px solid #000;
     border-radius: 5px;
     text-align: right;
 
@@ -73,7 +73,7 @@
  * Site footer
  */
 .site-footer {
-  border-top: 1px solid #fff;
+  border-top: 1px solid #000;
   padding: $spacing-unit 0;
 }
 
diff --git a/_sass/90s/_syntax-highlighting.scss b/_sass/90s/_syntax-highlighting.scss
index bccdb89..ee5d416 100644
--- a/_sass/90s/_syntax-highlighting.scss
+++ b/_sass/90s/_syntax-highlighting.scss
@@ -2,7 +2,7 @@
  * Syntax highlighting styles
  */
 .highlight {
-  background: #fff;
+  background: #ccc;
   @extend %vertical-rhythm;
 
   .highlighter-rouge & {
diff --git a/_sass/minima/_base.scss b/_sass/minima/_base.scss
deleted file mode 100644
index a0a2e81..0000000
--- a/_sass/minima/_base.scss
+++ /dev/null
@@ -1,76 +0,0 @@
-/**
- * Code formatting
- */
-pre,
-code {
-  font-size: 15px;
-  border: 1px solid #fff;
-  border-radius: 3px;
-  background-color: #eef;
-}
-
-code {
-  padding: 1px 5px;
-}
-
-pre {
-  padding: 8px 12px;
-  overflow-x: auto;
-
-  > code {
-    border: 0;
-    padding-right: 0;
-    padding-left: 0;
-  }
-}
-
-/**
- * Set `margin-bottom` to maintain vertical rhythm
- */
-h1, h2, h3, h4, h5, h6,
-p, blockquote, pre,
-ul, ol, dl, figure,
-%vertical-rhythm {
-  margin-bottom: $spacing-unit / 2;
-}
-
-/**
- * Wrapper
- */
-.wrapper {
-  max-width: -webkit-calc(#{$content-width} - (#{$spacing-unit} * 2));
-  max-width:         calc(#{$content-width} - (#{$spacing-unit} * 2));
-  margin-right: auto;
-  margin-left: auto;
-  padding-right: $spacing-unit;
-  padding-left: $spacing-unit;
-  @extend %clearfix;
-
-  @include media-query($on-laptop) {
-    max-width: -webkit-calc(#{$content-width} - (#{$spacing-unit}));
-    max-width:         calc(#{$content-width} - (#{$spacing-unit}));
-    padding-right: $spacing-unit / 2;
-    padding-left: $spacing-unit / 2;
-  }
-}
-
-
-
-/**
- * Clearfix
- */
-%clearfix:after {
-  content: "";
-  display: table;
-  clear: both;
-}
-
-
-
-/**
- * Icons
- */
-.icon > svg {
-  display: inline-block;
-  vertical-align: middle;
-}