layer at (0,0) size 800x600
  RenderView at (0,0) size 800x600
layer at (0,0) size 800x88
  RenderBlock {HTML} at (0,0) size 800x88
    RenderBody {BODY} at (16,16) size 768x56 [color=#0000FF]
      RenderRuby (inline) {RUBY} at (0,0) size 213x36
        RenderRubyRun (anonymous) at (0,19) size 192x37
          RenderRubyText {RT} at (0,-19) size 192x19
            RenderInline (generated) at (0,0) size 63x19
              RenderText at (0,0) size 63x19
                text run at (0,0) width 63: "BEFORE"
            RenderText {#text} at (63,0) size 77x19
              text run at (63,0) width 77: "CONTENT"
            RenderInline (generated) at (0,0) size 52x19
              RenderText at (140,0) size 52x19
                text run at (140,0) width 52: "AFTER"
          RenderRubyBase (anonymous) at (0,0) size 192x37
            RenderText {#text} at (84,0) size 24x36
              text run at (84,0) width 24: "A"
        RenderRubyRun (anonymous) at (192,19) size 21x37
          RenderRubyBase (anonymous) at (0,0) size 21x37
            RenderText {#text} at (0,0) size 21x36
              text run at (0,0) width 21: "B"
      RenderText {#text} at (0,0) size 0x0
      RenderText {#text} at (0,0) size 0x0