diff --git a/src/lib/model/layout.ts b/src/lib/model/layout.ts
index 8e8c8df..29c9290 100644
--- a/src/lib/model/layout.ts
+++ b/src/lib/model/layout.ts
@@ -15,7 +15,8 @@ export interface Rect {
 	height: number;
 }
 
-export const GAP = 40;
+// Pages touch edge to edge; rows of mixed sizes stay centred, so it reads like a loose grid.
+export const GAP = 0;
 
 export function layout(tree: Tree, sizeOf: (id: string) => Size): Map<string, Rect> {
 	const rects = new Map<string, Rect>();