correct code blocks

Author: kylepjohnson

_sass/_base.scss

@@ -131,7 +131,8 @@ code {
     font-size: 15px;
     border: 1px solid $grey-color-light;
     border-radius: 3px;
-    background-color: #eef;
+    background-color: $code-bg-color; // dark code background
+    color: $text-color;               // readable on dark bg
 }
 
 code {
@@ -140,7 +141,7 @@ code {
 
 pre {
     padding: 8px 12px;
-    overflow-x: scroll;
+    overflow-x: auto;
 
     > code {
         border: 0;

css/main.scss

@@ -32,6 +32,9 @@ $content-width:    800px;
 $on-palm:          600px;
 $on-laptop:        800px;
 
+// Code colors (dark mode)
+$code-bg-color:    hsl(225, 15%, 18%);
+
 
 
 // Using media queries with like this:

index.md

@@ -8,22 +8,22 @@ The Classical Language Toolkit (CLTK) is a Python library offering natural langu
 - Code: <https://github.com/cltk/cltk>
 - Docs: <https://docs.cltk.org>
 
-## Maintainers
+# Maintainers
 
 * [Kyle P. Johnson](https://github.com/kylepjohnson)
 * [Clément Besnier](https://github.com/clemsciences)
 
-# Previous version
+# Previous versions
 
 Previous generations of the CLTK are not supported anymore, but for those needing to use or reference past versions, these are preserved.
 
-## Version `1.x`
+## Versions `1.x`
 
 - Install: `pip install cltk==1.5.0`
 - Code: <https://github.com/cltk/cltk/tree/v1>
 - Docs: <https://v1.cltk.org>
 
-## Version `0.x`
+## Versions `0.x`
 
 - Install: `pip install cltk==0.1.121`
 - Code: <https://github.com/cltk/cltk/tree/v0>