add bottom button on issue details

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

@@ -65,7 +65,7 @@
         android:layout_width="0dp"
         android:layout_height="0dp"
         android:fillViewport="true"
-        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintBottom_toTopOf="@id/bottom_bar"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toBottomOf="@id/top_nav">
@@ -74,7 +74,7 @@
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:orientation="vertical"
-            android:paddingBottom="32dp">
+            android:paddingBottom="15dp">
 
             <ImageView
                 android:id="@+id/image"
@@ -315,4 +315,49 @@
             </LinearLayout>
         </LinearLayout>
     </ScrollView>
+
+    <LinearLayout
+        android:id="@+id/bottom_bar"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:background="@color/white"
+        android:gravity="center"
+        android:orientation="horizontal"
+        android:padding="20dp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintStart_toStartOf="parent">
+
+        <Button
+            android:id="@+id/backButtonBot"
+            android:layout_width="0dp"
+            android:layout_height="64dp"
+            android:layout_weight="1"
+            android:layout_marginEnd="10dp"
+            android:backgroundTint="@color/white"
+            android:clickable="true"
+            android:elevation="20dp"
+            android:focusable="true"
+            android:text="Edit Issue"
+            android:textColor="@color/primary"
+            android:textSize="17sp"
+            app:cornerRadius="21dp"
+            app:strokeColor="@color/primary"
+            app:strokeWidth="1dp" />
+
+        <Button
+            android:id="@+id/confirm_button"
+            android:layout_width="0dp"
+            android:layout_height="64dp"
+            android:layout_weight="1"
+            android:backgroundTint="@color/half_yellow"
+            android:clickable="true"
+            android:elevation="20dp"
+            android:focusable="true"
+            android:text="Withdraw Issue"
+            android:textColor="@android:color/white"
+            android:textSize="17sp"
+            app:cornerRadius="21dp"
+            android:paddingHorizontal="30dp"/>
+
+    </LinearLayout>
 </androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/values/colors.xml

@@ -13,10 +13,13 @@
     <color name="grey">#6D6D6D</color>
     <color name="light_grey">#EEEEEE</color>
     <color name="yellow">#E4C212</color>
+    <color name="half_yellow">#4DE4C212</color>
 
     <color name="blue">#2952D6</color>
     <color name="red">#F14915</color>
+    <color name="red_half">#4DF14915</color>
     <color name="green">#008000</color>
+    <color name="half_green">#4D008000</color>