Added background to prefab.

Prefab/5x7 Layout Nav.prefab

@@ -1,5 +1,75 @@
 %YAML 1.1
 %TAG !u! tag:unity3d.com,2011:
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+GameObject:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  serializedVersion: 6
+  m_Component:
+  - component: {fileID: 804504458299338547}
+  - component: {fileID: 597392288162912622}
+  - component: {fileID: 3284871700199737374}
+  m_Layer: 0
+  m_Name: background
+  m_TagString: Untagged
+  m_Icon: {fileID: 0}
+  m_NavMeshLayer: 0
+  m_StaticEditorFlags: 0
+  m_IsActive: 1
+--- !u!224 &804504458299338547
+RectTransform:
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+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 1898685734993734155}
+  m_LocalRotation: {x: 0, y: 0, z: 0, w: 1}
+  m_LocalPosition: {x: 0, y: 0, z: 0}
+  m_LocalScale: {x: 1, y: 1, z: 1}
+  m_Children: []
+  m_Father: {fileID: 6457669733996986345}
+  m_RootOrder: 0
+  m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
+  m_AnchorMin: {x: 0.5, y: 0.5}
+  m_AnchorMax: {x: 0.5, y: 0.5}
+  m_AnchoredPosition: {x: 0, y: 0}
+  m_SizeDelta: {x: 3000, y: 4200}
+  m_Pivot: {x: 0.5, y: 0.5}
+--- !u!222 &597392288162912622
+CanvasRenderer:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 1898685734993734155}
+  m_CullTransparentMesh: 0
+--- !u!114 &3284871700199737374
+MonoBehaviour:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 1898685734993734155}
+  m_Enabled: 1
+  m_EditorHideFlags: 0
+  m_Script: {fileID: -98529514, guid: f70555f144d8491a825f0804e09c671c, type: 3}
+  m_Name: 
+  m_EditorClassIdentifier: 
+  m_Material: {fileID: 0}
+  m_Color: {r: 1, g: 1, b: 1, a: 1}
+  m_RaycastTarget: 1
+  m_OnCullStateChanged:
+    m_PersistentCalls:
+      m_Calls: []
+  m_Texture: {fileID: 0}
+  m_UVRect:
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+    x: 0
+    y: 0
+    width: 1
+    height: 1
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 GameObject:
   m_ObjectHideFlags: 0
@@ -30,6 +100,7 @@ RectTransform:
   m_LocalPosition: {x: 0, y: 0, z: 0}
   m_LocalScale: {x: 1, y: 1, z: 1}
   m_Children:
+  - {fileID: 804504458299338547}
   - {fileID: 6457669734246873012}
   - {fileID: 6457669734645064461}
   m_Father: {fileID: 0}
@@ -115,7 +186,7 @@ RectTransform:
   m_LocalScale: {x: 1, y: 1, z: 1}
   m_Children: []
   m_Father: {fileID: 6457669733996986345}
-  m_RootOrder: 0
+  m_RootOrder: 1
   m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
   m_AnchorMin: {x: 0.5, y: 0.5}
   m_AnchorMax: {x: 0.5, y: 0.5}
@@ -185,7 +256,7 @@ RectTransform:
   m_LocalScale: {x: 0.5, y: 0.5, z: 0.5}
   m_Children: []
   m_Father: {fileID: 6457669733996986345}
-  m_RootOrder: 1
+  m_RootOrder: 2
   m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
   m_AnchorMin: {x: 0.5, y: 0.5}
   m_AnchorMax: {x: 0.5, y: 0.5}