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    BlockContainer <body> at [8,8] [8+0+0 784 0+0+8] [8+0+0 43 0+0+8] children: inline
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      AudioBox <audio> at [8,8] inline-block [0+0+0 300 0+0+0] [0+0+0 43 0+0+0] children: not-inline
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          BlockContainer <div.container.audio> at [8,8] [0+0+0 300 0+0+0] [0+0+0 43 0+0+0] [BFC] children: not-inline
            Box <div.controls.visible> at [8,8] flex-container(column) [0+0+0 300 0+0+0] [0+0+0 43 0+0+0] [FFC] children: not-inline
              BlockContainer <div.timeline> at [8,8] flex-item [0+0+0 300 0+0+0] [-5+0+5 5 5+0+-5] [BFC] children: not-inline
                BlockContainer <div.timeline-fill> at [8,8] [0+0+0 0 0+0+300] [0+0+0 5 0+0+0] children: not-inline
              Box <div.button-bar> at [16,17] flex-container(row) flex-item [0+0+8 284 8+0+0] [0+0+4 30 4+0+0] [FFC] children: not-inline
                Box <button.control-button.play-pause-button> at [16,20] flex-container(row) flex-item [0+0+0 24 0+0+0] [0+0+0 24 0+0+0] [FFC] children: not-inline
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                    SVGGeometryBox <path.play-path> at [22,25] [0+0+0 13 0+0+0] [0+0+0 14 0+0+0] children: not-inline
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                    SVGGeometryBox <path.muted-line> at [279.5,25] [0+0+0 15.5 0+0+0] [0+0+0 15.5 0+0+0] children: not-inline
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                        SVGGeometryBox <path> at [276,20] [0+0+0 24 0+0+0] [0+0+0 24 0+0+0] children: not-inline
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                      SVGClipBox <clipPath#muted-clip> at [276,20] [0+0+0 24 0+0+0] [0+0+0 24 0+0+0] children: not-inline
                        SVGGeometryBox <path> at [276,20] [0+0+0 24 0+0+0] [0+0+0 24 0+0+0] children: not-inline
                    SVGGeometryBox <path.speaker> at [280,24] [0+0+0 8 0+0+0] [0+0+0 16 0+0+0] children: not-inline
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                        SVGGeometryBox <path> at [276,20] [0+0+0 24 0+0+0] [0+0+0 24 0+0+0] children: not-inline
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ViewportPaintable (Viewport<#document>) [0,0 800x600]
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    PaintableWithLines (BlockContainer<BODY>) [8,8 784x43]
      PaintableBox (AudioBox<AUDIO>) [8,8 300x43]
        PaintableWithLines (BlockContainer(anonymous)) [8,8 300x43]
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            PaintableBox (Box<DIV>.controls.visible) [8,8 300x43]
              PaintableWithLines (BlockContainer<DIV>.timeline) [8,3 300x15]
                PaintableWithLines (BlockContainer<DIV>.timeline-fill) [8,8 0x5]
              PaintableBox (Box<DIV>.button-bar) [8,13 300x38]
                PaintableBox (Box<BUTTON>.control-button.play-pause-button) [16,20 24x24]
                  SVGSVGPaintable (SVGSVGBox<svg>.icon.play-pause-icon) [16,20 24x24]
                    SVGPathPaintable (SVGGeometryBox<path>.play-path) [22,25 13x14]
                PaintableWithLines (BlockContainer<SPAN>.timestamp) [48,25 80.84375x14]
                  TextPaintable (TextNode<#text>)
                PaintableBox (Box<BUTTON>.control-button.mute-button.high.muted) [276,20 24x24]
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                    SVGPathPaintable (SVGGeometryBox<path>.speaker) [280,24 8x16]

SC for Viewport<#document> [0,0 800x600] [children: 1] (z-index: auto)
 SC for BlockContainer<HTML> [0,0 800x59] [children: 1] (z-index: auto)
  SC for BlockContainer<DIV>.timeline [8,8 300x5] [children: 0] (z-index: 1)
