<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="com.elevation.MainActivity">

    <Button
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:background="#a591c6"
        android:text="Bouton 1"
        android:textColor="#FFF"
        android:textSize="25sp"
        android:elevation="4dp"
        android:stateListAnimator="@null"/>

    <Button
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:background="#f79c81"
        android:text="Bouton 2"
        android:textColor="#FFF"
        android:textSize="25sp"
        android:elevation="3dp"
        android:stateListAnimator="@null"/>

    <Button
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:background="#ea88b7"
        android:text="Bouton 3"
        android:textColor="#FFF"
        android:textSize="25sp"
        android:elevation="2dp"
        android:stateListAnimator="@null"/>

    <Button
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:background="#fede6f"
        android:text="Bouton 4"
        android:textColor="#FFF"
        android:textSize="25sp"
        android:elevation="1dp"
        android:stateListAnimator="@null"/>


</LinearLayout>