layer at (0,0) size 800x600
  RenderView at (0,0) size 800x600
layer at (0,0) size 800x600
  RenderBlock {HTML} at (0,0) size 800x600
    RenderBody {BODY} at (8,8) size 784x584
      RenderTextControl {INPUT} at (2,0) size 186x10
      RenderText {#text} at (0,0) size 0x0
      RenderText {#text} at (0,0) size 0x0
layer at (12,10) size 182x6 scrollHeight 21
  RenderBlock {DIV} at (2,2) size 182x6
caret: position 0 of child 0 {DIV} of {#shadow-root} of child 1 {INPUT} of body