diff --git a/LNPhotoBrower/ViewController.m b/LNPhotoBrower/ViewController.m
index 6a67910..d28eed1 100644
--- a/LNPhotoBrower/ViewController.m
+++ b/LNPhotoBrower/ViewController.m
@@ -32,6 +32,7 @@ - (NSMutableArray *)dataSource
 - (void)viewDidLoad {
     [super viewDidLoad];
     
+    self.collectionView.contentInset = UIEdgeInsetsMake(20, 20, 20, 20);
     self.flowLayout.minimumInteritemSpacing = 20;
     self.flowLayout.minimumLineSpacing = 20;
     self.flowLayout.itemSize = CGSizeMake(100, 100);