anchor.diff:                    :grid-template-columns "auto auto 1fr"
                     :width "100%"
                     :padding "6px 0"
  -                  :color "dimgray"
  -                  :border-bottom "solid 1px lightgray")
  +                  :color "dimgray")
                    ("#prompt"
                     :line-height "26px")
                    ("#prompt-extra"
  
positive.code:     ;; TODO: Only print `active-properties'.
      (flet ((source->html (source)
               (markup:markup
                (:div :class "source-name" "⛯ " (prompter:name source))
                (:table
                 (:tr
                  (loop with property-sample = (if (first (prompter:suggestions source)) ; TODO: Instead, ensure that suggestions always has an element?
                                                   (prompter:properties (first (prompter:suggestions source)))
  
negative.code:                   :background-color "#E8E8E8"
                    :width "100%"
                    :autofocus "true")
                   (".source-glyph"
                    :margin-right "3px")
                   (".source-name"
                    :color "white"
                    :padding-left "5px"
  