fenix/app/src/main/res/layout/layout_quick_action_sheet.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- This Source Code Form is subject to the terms of the Mozilla Public
   - License, v. 2.0. If a copy of the MPL was not distributed with this
   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
<androidx.constraintlayout.widget.ConstraintLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/quick_action_sheet"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="?foundation">

    <View
        android:id="@+id/quick_action_sheet_faded_handle"
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:background="?attr/neutralFaded"
        android:focusable="false"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <ImageButton
        android:id="@+id/quick_action_sheet_handle"
        android:layout_width="match_parent"
        android:layout_height="12dp"
        android:background="@null"
        android:contentDescription="@string/quick_action_sheet_handle"
        android:paddingTop="7dp"
        android:src="@drawable/ic_drawer_pull_tab"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="@id/quick_action_sheet_faded_handle" />

    <LinearLayout
        android:id="@+id/quick_action_buttons_layout"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom"
        android:layout_marginBottom="12dp"
        android:background="@null"
        android:orientation="horizontal"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@id/quick_action_sheet_handle">

        <Button
            android:id="@+id/quick_action_share"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:background="?selectableItemBackgroundBorderless"
            android:drawableTop="@drawable/quick_action_icon_share"
            android:drawablePadding="5dp"
            android:text="@string/quick_action_share"
            android:textAllCaps="false"
            android:textColor="?primaryText"
            android:textSize="12sp" />

        <Button
            android:id="@+id/quick_action_downloads"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:background="?selectableItemBackgroundBorderless"
            android:drawableTop="@drawable/library_icon_downloads_circle_background"
            android:drawablePadding="5dp"
            android:text="@string/quick_action_download"
            android:textAllCaps="false"
            android:textColor="?primaryText"
            android:textSize="12sp"
            android:visibility="gone" />

        <Button
            android:id="@+id/quick_action_bookmark"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:background="?selectableItemBackgroundBorderless"
            android:drawableTop="@drawable/bookmark_two_state"
            android:drawablePadding="5dp"
            android:text="@string/quick_action_bookmark"
            android:textAllCaps="false"
            android:textColor="?primaryText"
            android:textSize="12sp" />

        <Button
            android:id="@+id/quick_action_appearance"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:background="?selectableItemBackgroundBorderless"
            android:drawableTop="@drawable/quick_action_icon_appearance"
            android:drawablePadding="5dp"
            android:text="@string/quick_action_read_appearance"
            android:textAllCaps="false"
            android:textColor="?primaryText"
            android:textSize="12sp"
            android:visibility="gone" />

        <Button
            android:id="@+id/quick_action_open_app_link"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:background="?selectableItemBackgroundBorderless"
            android:drawableTop="@drawable/library_icon_app_links_circle_background"
            android:drawablePadding="5dp"
            android:text="@string/quick_action_open_app_link"
            android:textAllCaps="false"
            android:textColor="?primaryText"
            android:textSize="12sp"
            android:visibility="gone" />

        <Button
            android:id="@+id/quick_action_read"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:background="?selectableItemBackgroundBorderless"
            android:drawableTop="@drawable/reader_two_state"
            android:drawablePadding="5dp"
            android:text="@string/quick_action_read"
            android:textAllCaps="false"
            android:textColor="?primaryText"
            android:textSize="12sp"
            android:visibility="gone" />
    </LinearLayout>

    <View
        android:id="@+id/quick_action_overlay"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:alpha="0.0"
        android:background="?foundation"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="@id/quick_action_buttons_layout" />
</androidx.constraintlayout.widget.ConstraintLayout>