Fix font size of code blocks.

Author: munificent

asset/style.scss

@@ -176,10 +176,14 @@ blockquote {
 
 code {
   color: hsl(200, 20%, 40%);
-  font: normal 15px $mono;
+  font-family: $mono;
   white-space: pre;
 }
 
+p code {
+  font-size: 15px;
+}
+
 a code {
   color: $primary;
 }