anchor.diff:           (".tab:hover"
             :color "black")
            ("#modes"
  -          :background-color "gray"
  +          :background-color "rgb(110,110,110)"
             :color "white"
             :text-align "right"
             :padding-left "10px"
  
positive.code:    (style 
      #.(cl-css:css
         '((body
            :background "lightgray"
            :font-size "14px"
            :color "black"
            :padding 0
  
negative.code:          ("#controls"
            :font-size "16px"
            :font-weight "700"
            :background-color "rgb(60,60,60)"
            :padding-left "5px"
            :overflow "hidden"
            :white-space "nowrap"
  