anchor.diff:                    :background-color "#E8E8E8"
                     :width "100%"
                     :autofocus "true")
  +                 (".source"
  +                  :margin-left "10px"
  +                  :margin-top "15px")
                    (".source-glyph"
                     :margin-right "3px")
                    (".source-name"
  
positive.code:                   :overflow-x "hidden"
                    :width "100%")
                   (".source-content"
                    :padding-left "16px"
                    :margin-bottom "20px"
                    :width "100%"
                    :table-layout "fixed")
                   (".source-content td"
  
negative.code:                '((* :font-family "monospace,monospace"
                      :font-size "14px"
                      :line-height "18px")
                   (body
                    :margin "0"
                    :padding "0")
                   ("#prompt-area"
                    :background-color "dimgray"
                    :display "grid"
                    :grid-template-columns "auto auto 1fr"
                    :width "100%"
                    :color "white")
                   ("#prompt"
                    :padding-left "10px"
                    :line-height "26px")
                   ("#prompt-extra"
                    :line-height "26px"
  