fix layout margin - issue

app/src/main/java/com/example/qms/MainActivity.java

@@ -29,7 +29,7 @@ public class MainActivity extends AppCompatActivity {
         // Apply system bar insets
         ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main), (v, insets) -> {
             Insets systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars());
-            v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom);
+            v.setPadding(0, 0, 0,  systemBars.bottom);
             return insets;
         });
 

app/src/main/res/layout/activity_issues.xml

@@ -49,8 +49,8 @@
                 app:layout_constraintTop_toTopOf="parent" />
 
             <LinearLayout
-                android:layout_width="100dp"
-                android:layout_height="50dp"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
                 android:layout_marginEnd="16dp"
                 android:gravity="center"
                 app:layout_constraintBottom_toBottomOf="parent"

app/src/main/res/layout/activity_main.xml

@@ -7,13 +7,13 @@
     android:layout_height="match_parent"
     tools:context=".MainActivity">
 
-    <!-- ========== MAIN CONTENT ========== -->
+
     <androidx.constraintlayout.widget.ConstraintLayout
         android:id="@+id/main"
         android:layout_width="match_parent"
         android:layout_height="match_parent">
 
-        <!-- TOP BAR -->
+
         <LinearLayout
             android:id="@+id/topBar"
             android:layout_width="match_parent"
@@ -24,6 +24,18 @@
             app:layout_constraintStart_toStartOf="parent"
             app:layout_constraintTop_toTopOf="parent">
 
+        </LinearLayout>
+
+        <LinearLayout
+            android:id="@+id/top_menu_bar"
+            android:layout_width="match_parent"
+            android:layout_height="59dp"
+            android:background="@color/primary"
+            android:gravity="center_vertical"
+            android:orientation="horizontal"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@id/topBar">
+
             <ImageButton
                 android:id="@+id/btnBack"
                 android:layout_width="32dp"
@@ -60,7 +72,7 @@
             app:layout_constraintBottom_toBottomOf="parent"
             app:layout_constraintStart_toStartOf="parent">
 
-            <!-- Left -->
+
             <LinearLayout
                 android:layout_width="0dp"
                 android:layout_height="wrap_content"
@@ -82,7 +94,7 @@
                     android:textSize="16sp" />
             </LinearLayout>
 
-            <!-- Center -->
+
             <LinearLayout
                 android:id="@+id/add_issue_bottom_nav"
                 android:layout_width="0dp"
@@ -105,7 +117,7 @@
                     android:textSize="16sp" />
             </LinearLayout>
 
-            <!-- Right -->
+
             <LinearLayout
                 android:id="@+id/access_item_bottom_nav"
                 android:layout_width="0dp"