Fix pre > code padding at mobile width

Author: bcb

docs/assets/extra.css

@@ -56,8 +56,8 @@
   }
 
   pre > code {
-    padding-left: 20px;
-    padding-right: 20px;
+    padding-left: 20px !important;
+    padding-right: 20px !important;
   }
 }