fix: add inline code block style

Closes #95

source/css/style.styl

@@ -27,6 +27,15 @@ a
     &:visited
         color: color-link
 
+code
+    margin: 0 2px
+    color: #e96900
+    padding: 3px 5px
+    font-size: 0.8em
+    border-radius: 2px
+    font-family: font-mono
+    background-color: #f8f8f8
+
 .outer
     clearfix()
     max-width: (column-width + gutter-width) * columns + gutter-width