edit css background code block

it4i_theme/assets/stylesheets/application.css

@@ -535,9 +535,6 @@ pre span {
 .article a, .article h1, .article h2 {
     color: #fff0e6;
 }
-.article code {
-    background: #eee;
-}
 .article kbd {
     color: #555;
     background-color: #fcfcfc;