Viewport <#document> at (0,0) content-size 800x600 children: not-inline BlockContainer at (0,0) content-size 800x600 [BFC] children: not-inline BlockContainer at (8,8) content-size 784x17 children: not-inline Box at (8,8) content-size 784x17 [GFC] children: not-inline BlockContainer at (8,8) content-size 392x17 [BFC] children: inline frag 0 from TextNode start: 0, length: 3, rect: [8,8 21.609375x17] baseline: 13.296875 "1fr" TextNode <#text> ViewportPaintable (Viewport<#document>) [0,0 800x600] PaintableWithLines (BlockContainer) [0,0 800x600] PaintableWithLines (BlockContainer) [8,8 784x17] PaintableBox (Box

.grid-container) [8,8 784x17] PaintableWithLines (BlockContainer

.grid-item) [8,8 392x17] TextPaintable (TextNode<#text>)