Viewport <#document> at [0,0] [0+0+0 800 0+0+0] [0+0+0 600 0+0+0] [BFC] children: not-inline BlockContainer at [0,0] [0+0+0 800 0+0+0] [0+0+0 222 0+0+0] [BFC] children: not-inline BlockContainer at [8,8] [8+0+0 784 0+0+8] [8+0+0 206 0+0+8] children: not-inline BlockContainer
at [8,8] [0+0+0 784 0+0+0] [0+0+0 16 0+0+0] children: inline frag 0 from TextNode start: 0, length: 38, rect: [8,8 312.4375x16] baseline: 12.796875 "This is inserted before the container." TextNode <#text> (not painted) BlockContainer at [39,55] [20+1+10 722 10+1+20] [20+1+10 112 10+1+20] children: not-inline BlockContainer

at [39,71] [0+0+0 722 0+0+0] [16+0+0 16 0+0+16] children: inline frag 0 from TextNode start: 0, length: 34, rect: [39,71 270.59375x16] baseline: 12.796875 "This is inserted at the beginning." TextNode <#text> (not painted) BlockContainer

at [39,103] [0+0+0 722 0+0+0] [16+0+0 16 0+0+16] children: inline frag 0 from TextNode start: 0, length: 29, rect: [39,103 230.59375x16] baseline: 12.796875 "This is the original content." TextNode <#text> (not painted) BlockContainer

at [39,135] [0+0+0 722 0+0+0] [16+0+0 16 0+0+16] children: inline frag 0 from TextNode start: 0, length: 28, rect: [39,135 225.515625x16] baseline: 12.796875 "This is inserted at the end." TextNode <#text> (not painted) BlockContainer

at [8,198] [0+0+0 784 0+0+0] [0+0+0 16 0+0+0] children: inline frag 0 from TextNode start: 0, length: 37, rect: [8,198 300.09375x16] baseline: 12.796875 "This is inserted after the container." TextNode <#text> (not painted) BlockContainer <(anonymous)> at [8,214] [0+0+0 784 0+0+0] [0+0+0 0 0+0+0] children: inline TextNode <#text> (not painted) TextNode <#text> (not painted) ViewportPaintable (Viewport<#document>) [0,0 800x600] PaintableWithLines (BlockContainer) [0,0 800x222] PaintableWithLines (BlockContainer) [8,8 784x206] PaintableWithLines (BlockContainer
) [8,8 784x16] PaintableWithLines (BlockContainer
#container) [28,44 744x134] PaintableWithLines (BlockContainer

) [39,71 722x16] PaintableWithLines (BlockContainer

) [39,103 722x16] PaintableWithLines (BlockContainer

) [39,135 722x16] PaintableWithLines (BlockContainer

) [8,198 784x16] PaintableWithLines (BlockContainer(anonymous)) [8,214 784x0] SC for Viewport<#document> [0,0 800x600] (z-index: auto) SC for BlockContainer [0,0 800x222] (z-index: auto)