layer at (0,0) size 800x600
  LayoutView at (0,0) size 800x600
layer at (0,0) size 800x51
  LayoutBlockFlow {html} at (0,0) size 800x51
    LayoutBlockFlow {body} at (8,16) size 784x19
      LayoutBlockFlow {p} at (0,0) size 784x19
        LayoutButton {button} at (0,1) size 471.08x18 [bgcolor=#FFFFFF] [border: none (2px solid #D1D1D1) none (2px solid #D1D1D1)]
          LayoutBlockFlow (anonymous) at (8,2) size 455.08x13
            LayoutText {#text} at (0,0) size 456x13
              text run at (0,0) width 456: "Activating (e.g. holding the mouse button down on) this button should make it go green."