address review: scale with text size

Author: bishabosha

_sass/components/code.scss

@@ -72,7 +72,6 @@
         pre {
             margin: 0;
             padding: 0 25px 10px 25px; // looks better with no JS
-            height: 270px; // consistent height for all code blocks
 
             code {
                 padding: 0;