Partially revert rhazdon#511

This partially reverts rhazdon#511.

Reason: these two selectors are broken.

The first, because a CSS child selector at the top-level, without a parent, has no meaning.

The second, because hugo emits `<code>` so we need an element selector.
The class selector would match `<div class="code">`.

Author: thgoebel

assets/scss/_main.scss

@@ -210,7 +210,7 @@ em, i, strong {
   }
 }
 
-> code {
+code {
   font-family: Consolas, Monaco, Andale Mono, Ubuntu Mono, monospace;
   font-display: auto;
   font-feature-settings: normal;
@@ -257,7 +257,7 @@ pre {
     word-wrap: break-word;
   }
 
-  > .code {
+  > code {
     background: none !important;
     margin: 0;
     padding: 0;