diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index 84368e6..c447a72 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -11,7 +11,8 @@
 
     <android.support.constraint.ConstraintLayout
         android:layout_width="match_parent"
-        android:layout_height="match_parent">
+        android:layout_height="match_parent"
+        android:background="#ffffff">
 
         <FrameLayout
             android:id="@+id/main_banner_layout"
@@ -22,6 +23,7 @@
             android:id="@+id/main_tab_layout"
             android:layout_width="match_parent"
             android:layout_height="42dp"
+            android:background="#ffffff"
             app:layout_constraintEnd_toEndOf="parent"
             app:layout_constraintStart_toStartOf="parent"
             app:layout_constraintTop_toBottomOf="@id/main_banner_layout" />
diff --git a/app/src/main/res/layout/custom_spinner_item.xml b/app/src/main/res/layout/custom_spinner_item.xml
index ee89bd8..23b175d 100644
--- a/app/src/main/res/layout/custom_spinner_item.xml
+++ b/app/src/main/res/layout/custom_spinner_item.xml
@@ -2,7 +2,8 @@
 <android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
-    android:layout_height="wrap_content">
+    android:layout_height="wrap_content"
+    android:background="#ffffff">
 
     <TextView
         android:id="@+id/custom_spinner_item_text"
@@ -11,6 +12,7 @@
         android:layout_marginBottom="12dp"
         android:layout_marginStart="8dp"
         android:layout_marginTop="12dp"
+        android:background="#ffffff"
         android:textColor="#000000"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintStart_toStartOf="parent"
diff --git a/app/src/main/res/layout/regist_overlay.xml b/app/src/main/res/layout/regist_overlay.xml
index dc08e3f..d989e5d 100644
--- a/app/src/main/res/layout/regist_overlay.xml
+++ b/app/src/main/res/layout/regist_overlay.xml
@@ -16,7 +16,7 @@
     <android.support.constraint.ConstraintLayout
         android:layout_width="match_parent"
         android:layout_height="match_parent"
-        android:background="#55000000"
+        android:background="#98000000"
         android:paddingTop="@dimen/statusbar_height">
 
         <FrameLayout