activity_main.xml

<android.support.v4.widget.DrawerLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/drawer_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <LinearLayout
        android:orientation="vertical"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <android.support.design.widget.AppBarLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content">

            <android.support.v7.widget.Toolbar
                android:id="@+id/toolbar"
                android:layout_width="match_parent"
                android:layout_height="wrap_content">
            </android.support.v7.widget.Toolbar>

        </android.support.design.widget.AppBarLayout>

        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:clipChildren="false">

            <LinearLayout
                android:id="@+id/button_container"
                android:orientation="horizontal"
                android:layout_width="match_parent"
                android:layout_height="80dp"
                android:layout_alignParentBottom="true"
                android:paddingBottom="12dp"
                android:clipChildren="false"
                android:clipToPadding="false">

                <RelativeLayout
                    android:orientation="horizontal"
                    android:layout_width="0dp"
                    android:layout_height="match_parent"
                    android:layout_weight="2"
                    android:paddingRight="16dp"
                    android:paddingEnd="16dp"
                    android:clipToPadding="false">

                    <android.support.design.widget.FloatingActionButton
                        android:id="@+id/skip_button"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_centerVertical="true"
                        android:layout_alignParentRight="true"
                        android:layout_alignParentEnd="true"
                        android:hapticFeedbackEnabled="true"
                        android:src="@drawable/skip_red_24dp"
                        app:backgroundTint="@android:color/white"
                        app:fabSize="auto"
                        app:rippleColor="#22ED7563"/>

                </RelativeLayout>

                <RelativeLayout
                    android:orientation="horizontal"
                    android:layout_width="0dp"
                    android:layout_height="match_parent"
                    android:layout_weight="1">

                    <android.support.design.widget.FloatingActionButton
                        android:id="@+id/rewind_button"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_centerInParent="true"
                        android:hapticFeedbackEnabled="true"
                        android:src="@drawable/rewind_blue_24dp"
                        app:backgroundTint="@android:color/white"
                        app:fabSize="mini"
                        app:rippleColor="#225BC9FA"/>

                </RelativeLayout>

                <RelativeLayout
                    android:orientation="horizontal"
                    android:layout_width="0dp"
                    android:layout_height="match_parent"
                    android:layout_weight="2"
                    android:paddingLeft="16dp"
                    android:paddingStart="16dp"
                    android:clipToPadding="false">

                    <android.support.design.widget.FloatingActionButton
                        android:id="@+id/like_button"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_centerVertical="true"
                        android:layout_alignParentLeft="true"
                        android:layout_alignParentStart="true"
                        android:hapticFeedbackEnabled="true"
                        android:src="@drawable/like_green_24dp"
                        app:backgroundTint="@android:color/white"
                        app:fabSize="auto"
                        app:rippleColor="#226FE2B3"/>

                </RelativeLayout>

            </LinearLayout>

            <RelativeLayout
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_above="@+id/button_container"
                android:padding="20dp"
                android:clipToPadding="false"
                android:clipChildren="false">

                <com.yuyakaido.android.cardstackview.CardStackView
                    android:id="@+id/card_stack_view"
                    android:layout_width="match_parent"
                    android:layout_height="match_parent">
                </com.yuyakaido.android.cardstackview.CardStackView>

            </RelativeLayout>

        </RelativeLayout>

    </LinearLayout>

    <android.support.design.widget.NavigationView
        android:id="@+id/navigation_view"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        android:fitsSystemWindows="true">
    </android.support.design.widget.NavigationView>

</android.support.v4.widget.DrawerLayout>