diff --git a/Example/TLPhotoPicker/ViewController.swift b/Example/TLPhotoPicker/ViewController.swift
index b6f7cd9d..11cad31e 100644
--- a/Example/TLPhotoPicker/ViewController.swift
+++ b/Example/TLPhotoPicker/ViewController.swift
@@ -18,6 +18,7 @@ class ViewController: UIViewController,TLPhotosPickerViewControllerDelegate {
     
     @IBAction func pickerButtonTap() {
         let viewController = CustomPhotoPickerViewController()
+        viewController.modalPresentationStyle = .fullScreen
         viewController.delegate = self
         viewController.didExceedMaximumNumberOfSelection = { [weak self] (picker) in
             self?.showExceededMaximumAlert(vc: picker)
@@ -67,6 +68,7 @@ class ViewController: UIViewController,TLPhotosPickerViewControllerDelegate {
     
     @IBAction func pickerWithCustomBlackStyle() {
         let viewController = CustomBlackStylePickerViewController()
+        viewController.modalPresentationStyle = .fullScreen
         viewController.delegate = self
         viewController.didExceedMaximumNumberOfSelection = { [weak self] (picker) in
             self?.showExceededMaximumAlert(vc: picker)
diff --git a/README.md b/README.md
index 5db57c91..e5987538 100644
--- a/README.md
+++ b/README.md
@@ -312,6 +312,8 @@ public struct TLPhotosPickerConfigure {
     public var preventAutomaticLimitedAccessAlert = true // newest iOS 14
     public var mediaType: PHAssetMediaType? = nil
     public var numberOfColumn = 3
+    public var minimumLineSpacing: CGFloat = 5
+    public var minimumInteritemSpacing: CGFloat = 5
     public var singleSelectedMode = false
     public var maxSelectedAssets: Int? = nil //default: inf
     public var fetchOption: PHFetchOptions? = nil //default: creationDate
diff --git a/TLPhotoPicker/Classes/TLPhotosPickerViewController.swift b/TLPhotoPicker/Classes/TLPhotosPickerViewController.swift
index 52cfbf29..72ccbcba 100644
--- a/TLPhotoPicker/Classes/TLPhotosPickerViewController.swift
+++ b/TLPhotoPicker/Classes/TLPhotosPickerViewController.swift
@@ -77,6 +77,8 @@ public struct TLPhotosPickerConfigure {
     public var preventAutomaticLimitedAccessAlert = true
     public var mediaType: PHAssetMediaType? = nil
     public var numberOfColumn = 3
+    public var minimumLineSpacing: CGFloat = 5
+    public var minimumInteritemSpacing: CGFloat = 5
     public var singleSelectedMode = false
     public var maxSelectedAssets: Int? = nil
     public var fetchOption: PHFetchOptions? = nil
@@ -235,16 +237,22 @@ open class TLPhotosPickerViewController: UIViewController {
             registerForPreviewing(with: self, sourceView: collectionView)
         }
 
-        
+        updateUserInterfaceStyle()
+    }
+    
+    private func updateUserInterfaceStyle() {
         if #available(iOS 13.0, *) {
             let userInterfaceStyle = self.traitCollection.userInterfaceStyle
             let image = TLBundle.podBundleImage(named: "pop_arrow")
+            let subImage = TLBundle.podBundleImage(named: "arrow")
             if userInterfaceStyle.rawValue == 2 {
                 self.popArrowImageView.image = image?.colorMask(color: .systemBackground)
+                self.subTitleArrowImageView.image = subImage?.colorMask(color: .white)
                 self.view.backgroundColor = .black
                 self.collectionView.backgroundColor = .black
-            }else {
+            } else {
                 self.popArrowImageView.image = image?.colorMask(color: .white)
+                self.subTitleArrowImageView.image = subImage
                 self.view.backgroundColor = .white
                 self.collectionView.backgroundColor = .white
             }
@@ -385,10 +393,11 @@ extension TLPhotosPickerViewController {
             return
         }
         let count = CGFloat(self.configure.numberOfColumn)
-        let width = floor((self.view.frame.size.width-(5*(count-1)))/count)
+        let width = floor((self.view.frame.size.width - (self.configure.minimumInteritemSpacing * (count-1))) / count)
         self.thumbnailSize = CGSize(width: width, height: width)
         layout.itemSize = self.thumbnailSize
         layout.minimumInteritemSpacing = 0
+        layout.minimumLineSpacing = self.configure.minimumLineSpacing
         self.collectionView.collectionViewLayout = layout
         self.placeholderThumbnail = centerAtRect(image: self.configure.placeholderIcon, rect: CGRect(x: 0, y: 0, width: width, height: width))
         self.cameraImage = centerAtRect(image: self.configure.cameraIcon, rect: CGRect(x: 0, y: 0, width: width, height: width), bgColor: self.configure.cameraBgColor)
@@ -408,9 +417,10 @@ extension TLPhotosPickerViewController {
         self.titleLabel.text = self.configure.customLocalizedTitle["Camera Roll"]
         self.subTitleLabel.text = self.configure.tapHereToChange
         self.cancelButton.title = self.configure.cancelTitle
-        self.cancelButton.setTitleTextAttributes([NSAttributedString.Key.font: UIFont.boldSystemFont(ofSize: UIFont.labelFontSize),NSAttributedString.Key.foregroundColor:UIColor.blue], for: .normal)
+        
+        let attributes: [NSAttributedString.Key: Any] = [.font: UIFont.boldSystemFont(ofSize: UIFont.labelFontSize)]
+        self.doneButton.setTitleTextAttributes(attributes, for: .normal)
         self.doneButton.title = self.configure.doneTitle
-        self.doneButton.setTitleTextAttributes([NSAttributedString.Key.font: UIFont.boldSystemFont(ofSize: UIFont.labelFontSize),NSAttributedString.Key.foregroundColor:UIColor.blue], for: .normal)
         self.emptyView.isHidden = true
         self.emptyImageView.image = self.configure.emptyImage
         self.emptyMessageLabel.text = self.configure.emptyMessage
@@ -425,11 +435,12 @@ extension TLPhotosPickerViewController {
             self.usedPrefetch = false
         }
         if #available(iOS 9.0, *), self.allowedLivePhotos {
-        }else {
+        } else {
             self.allowedLivePhotos = false
         }
         self.customDataSouces?.registerSupplementView(collectionView: self.collectionView)
         self.navigationBar.delegate = self
+        updateUserInterfaceStyle()
     }
     
     private func updatePresentLimitedLibraryButton() {
diff --git a/TLPhotoPicker/Classes/TLPhotosPickerViewController.xib b/TLPhotoPicker/Classes/TLPhotosPickerViewController.xib
index 0ca0037c..d98af0cb 100644
--- a/TLPhotoPicker/Classes/TLPhotosPickerViewController.xib
+++ b/TLPhotoPicker/Classes/TLPhotosPickerViewController.xib
@@ -75,7 +75,7 @@
                                                         <nil key="textColor"/>
                                                         <nil key="highlightedColor"/>
                                                     </label>
-                                                    <imageView userInteractionEnabled="NO" contentMode="scaleToFill" horizontalHuggingPriority="251" verticalHuggingPriority="251" image="arrow.png" translatesAutoresizingMaskIntoConstraints="NO" id="b7w-7R-rco">
+                                                    <imageView userInteractionEnabled="NO" contentMode="scaleToFill" horizontalHuggingPriority="251" verticalHuggingPriority="251" translatesAutoresizingMaskIntoConstraints="NO" id="b7w-7R-rco">
                                                         <rect key="frame" x="34.5" y="7.5" width="10" height="10"/>
                                                         <constraints>
                                                             <constraint firstAttribute="width" priority="999" constant="10" id="7bM-Da-Q8A"/>
@@ -172,7 +172,7 @@
                                 <constraint firstAttribute="bottom" secondItem="grw-Nk-Sxr" secondAttribute="bottom" id="sPK-1G-qLo"/>
                             </constraints>
                         </view>
-                        <imageView userInteractionEnabled="NO" contentMode="scaleToFill" horizontalHuggingPriority="251" verticalHuggingPriority="251" image="pop_arrow.png" translatesAutoresizingMaskIntoConstraints="NO" id="5zn-je-qLx">
+                        <imageView userInteractionEnabled="NO" contentMode="scaleToFill" horizontalHuggingPriority="251" verticalHuggingPriority="251" translatesAutoresizingMaskIntoConstraints="NO" id="5zn-je-qLx">
                             <rect key="frame" x="180.5" y="10" width="14" height="7"/>
                             <constraints>
                                 <constraint firstAttribute="height" constant="7" id="eZN-nB-EHu"/>