diff --git a/MAF/MAF/Images.xcassets/buttons/btn_close_gray_up.imageset/Contents.json b/MAF/MAF/Images.xcassets/buttons/btn_close_gray_up.imageset/Contents.json
new file mode 100644
index 0000000..8865f68
--- /dev/null
+++ b/MAF/MAF/Images.xcassets/buttons/btn_close_gray_up.imageset/Contents.json
@@ -0,0 +1,18 @@
+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "scale" : "1x",
+      "filename" : "btn_close_gray_up.png"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "2x",
+      "filename" : "btn_close_gray_up@2x.png"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}
\ No newline at end of file
diff --git a/MAF/MAF/Images.xcassets/buttons/btn_close_gray_up.imageset/btn_close_gray_up.png b/MAF/MAF/Images.xcassets/buttons/btn_close_gray_up.imageset/btn_close_gray_up.png
new file mode 100644
index 0000000..1d87f38
Binary files /dev/null and b/MAF/MAF/Images.xcassets/buttons/btn_close_gray_up.imageset/btn_close_gray_up.png differ
diff --git a/MAF/MAF/Images.xcassets/buttons/btn_close_gray_up.imageset/btn_close_gray_up@2x.png b/MAF/MAF/Images.xcassets/buttons/btn_close_gray_up.imageset/btn_close_gray_up@2x.png
new file mode 100644
index 0000000..1e4a5fc
Binary files /dev/null and b/MAF/MAF/Images.xcassets/buttons/btn_close_gray_up.imageset/btn_close_gray_up@2x.png differ
diff --git a/MAF/MAF/PostDetailViewController.m b/MAF/MAF/PostDetailViewController.m
index 93e918a..cb4b1a8 100644
--- a/MAF/MAF/PostDetailViewController.m
+++ b/MAF/MAF/PostDetailViewController.m
@@ -19,6 +19,9 @@ @interface PostDetailViewController () <UICollectionViewDataSource, UICollection
 @property (weak, nonatomic) IBOutlet UICollectionView *_collectionView;
 @property (weak, nonatomic) IBOutlet UITextField *_commentContentTextField;
 @property (weak, nonatomic) IBOutlet UIView *_postView;
+@property (nonatomic, strong) UITapGestureRecognizer *tapGesture;
+@property (nonatomic, assign) CGPoint originalCenter;
+
 
 - (IBAction)_addComment:(id)sender;
 - (IBAction)dismiss:(id)sender;
@@ -32,7 +35,8 @@ - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
     if (self) {
         [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardDidShow:) name:UIKeyboardDidShowNotification object:nil];
         [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardDidHide:) name:UIKeyboardDidHideNotification object:nil];
-        
+        self.tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(dismissKeyboard:)];
+        [self.view addGestureRecognizer:self.tapGesture];
     }
     return self;
 }
@@ -40,14 +44,17 @@ - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
 - (void)keyboardDidShow:(NSNotification *)notification
 {
     // Get the size of the keyboard.
+    self.tapGesture.enabled = YES;
     CGRect keyboardRect = [[[notification userInfo] objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue];
-    CGFloat diffY = keyboardRect.origin.y - (self.view.frame.origin.y + self.view.frame.size.height + keyboardRect.size.height/2);
-    [self.view moveToPoint:CGPointMake(self.view.center.x, self.view.center.y + 10 - diffY) withBeginTime:CACurrentMediaTime() onCompletion:nil];
+    CGFloat diffY = keyboardRect.origin.y - (self.view.center.y + self.view.frame.size.height/2);
+    self.originalCenter = self.view.center;
+    [self.view moveToPoint:CGPointMake(self.view.center.x, self.view.center.y - diffY) withBeginTime:CACurrentMediaTime() onCompletion:nil];
 }
 
 -(void)keyboardDidHide:(NSNotification *)notification
 {
-    [self.view moveToPoint:CGPointMake(self.view.center.x, self.view.center.y) withBeginTime:CACurrentMediaTime() onCompletion:nil];
+    [self.view moveToPoint:self.originalCenter withBeginTime:CACurrentMediaTime() onCompletion:nil];
+    self.tapGesture.enabled = NO;
 }
 
 - (void)viewDidLoad {
@@ -57,7 +64,6 @@ - (void)viewDidLoad {
     self._collectionView.delegate = self;
     self._collectionView.dataSource = self;
     self._commentContentTextField.delegate = self;
-    self.title = @"Comment";
     
     MessageCollectionViewCell *postView = [[[NSBundle mainBundle] loadNibNamed:@"MessageCollectionViewCell" owner:nil options:nil] firstObject];
     postView.post = self.post;
@@ -128,6 +134,10 @@ - (IBAction)_addComment:(id)sender {
     [[ViewManager instance] clearCache];
 }
 
+- (void)dismissKeyboard:(id)sender {
+    [self._commentContentTextField resignFirstResponder];
+}
+
 - (IBAction)dismiss:(id)sender
 {
     [self dismissViewControllerAnimated:YES completion:nil];
diff --git a/MAF/MAF/PostDetailViewController.xib b/MAF/MAF/PostDetailViewController.xib
index a16d897..5a10314 100644
--- a/MAF/MAF/PostDetailViewController.xib
+++ b/MAF/MAF/PostDetailViewController.xib
@@ -58,22 +58,30 @@
                                 <constraint firstAttribute="width" constant="28" id="Cin-lJ-ouQ"/>
                                 <constraint firstAttribute="height" constant="28" id="NlJ-xl-8Bn"/>
                             </constraints>
-                            <state key="normal" image="btn_close_white_up"/>
+                            <state key="normal" image="btn_close_gray_up"/>
                             <connections>
                                 <action selector="dismiss:" destination="-1" eventType="touchUpInside" id="OUe-bT-Lea"/>
                             </connections>
                         </button>
-                        <view contentMode="scaleToFill" fixedFrame="YES" translatesAutoresizingMaskIntoConstraints="NO" id="GNh-M0-U9I">
+                        <view contentMode="scaleToFill" fixedFrame="YES" translatesAutoresizingMaskIntoConstraints="NO" id="GNh-M0-U9I" userLabel="Divider">
                             <rect key="frame" x="0.0" y="27" width="320" height="1"/>
                             <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
-                            <color key="backgroundColor" white="0.33333333333333331" alpha="1" colorSpace="calibratedWhite"/>
+                            <color key="backgroundColor" red="0.95294117647058818" green="0.95294117647058818" blue="0.95294117647058818" alpha="1" colorSpace="calibratedRGB"/>
                         </view>
+                        <label opaque="NO" clipsSubviews="YES" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Post" textAlignment="center" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="Qey-KZ-XlL" customClass="OpenSansRegularLabel">
+                            <rect key="frame" x="145" y="5" width="30" height="17"/>
+                            <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
+                            <fontDescription key="fontDescription" type="system" pointSize="14"/>
+                            <nil key="highlightedColor"/>
+                        </label>
                     </subviews>
-                    <color key="backgroundColor" white="0.66666666666666663" alpha="1" colorSpace="calibratedWhite"/>
+                    <color key="backgroundColor" white="1" alpha="1" colorSpace="calibratedWhite"/>
                     <constraints>
                         <constraint firstAttribute="trailing" secondItem="oJ5-Ws-L9z" secondAttribute="trailing" id="Aye-8V-i4e"/>
                         <constraint firstItem="oJ5-Ws-L9z" firstAttribute="top" secondItem="VLj-Y4-39R" secondAttribute="top" id="QKz-kc-H8b"/>
+                        <constraint firstAttribute="centerX" secondItem="Qey-KZ-XlL" secondAttribute="centerX" id="TrB-wp-bfb"/>
                         <constraint firstAttribute="bottom" secondItem="oJ5-Ws-L9z" secondAttribute="bottom" id="Yeq-Sw-KA2"/>
+                        <constraint firstAttribute="centerY" secondItem="Qey-KZ-XlL" secondAttribute="centerY" id="bES-Od-rhY"/>
                         <constraint firstAttribute="height" constant="28" id="hJW-pw-OeG"/>
                     </constraints>
                 </view>
@@ -101,6 +109,6 @@
         </view>
     </objects>
     <resources>
-        <image name="btn_close_white_up" width="10" height="10"/>
+        <image name="btn_close_gray_up" width="11" height="11"/>
     </resources>
 </document>
diff --git a/MAF/MAF/PresentingAnimator.m b/MAF/MAF/PresentingAnimator.m
index 6bdd23a..6843719 100644
--- a/MAF/MAF/PresentingAnimator.m
+++ b/MAF/MAF/PresentingAnimator.m
@@ -24,15 +24,16 @@ - (void)animateTransition:(id <UIViewControllerContextTransitioning>)transitionC
     fromView.userInteractionEnabled = NO;
     
     UIView *dimmingView = [[UIView alloc] initWithFrame:fromView.bounds];
-    dimmingView.backgroundColor = [UIColor customGrayColor];
+    dimmingView.backgroundColor = [UIColor blackColor];
     dimmingView.layer.opacity = 0.0;
     
     UIView *toView = [transitionContext viewControllerForKey:UITransitionContextToViewControllerKey].view;
-    CGFloat sizeReductionRatio = (float)3/7;
+    CGFloat heightRatio = (float)4/7;
+//    CGFloat widthRatio = (float)6/7;
     toView.frame = CGRectMake(0,
                               0,
                               CGRectGetWidth(transitionContext.containerView.bounds),
-                              sizeReductionRatio*CGRectGetHeight(transitionContext.containerView.bounds));
+                              heightRatio*CGRectGetHeight(transitionContext.containerView.bounds));
     toView.center = CGPointMake(transitionContext.containerView.center.x, -transitionContext.containerView.center.y);
     
     [transitionContext.containerView addSubview:dimmingView];