Magisk/app/src/main/res/layout/fragment_install.xml

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

    <android.support.v7.widget.CardView
        android:id="@+id/install_info_card"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginBottom="4dp"
        android:layout_marginLeft="5dp"
        android:layout_marginRight="5dp"
        android:layout_marginTop="6dp"
        style="?attr/cardStyle"
        app:cardUseCompatPadding="true">

        <LinearLayout
            android:orientation="vertical"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:padding="5dp">

            <TextView
                android:id="@+id/install_title"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_gravity="center"
                android:gravity="center"
                android:padding="5dp"
                android:textStyle="bold" />

            <TextView
                android:id="@+id/current_version_title"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_gravity="center"
                android:gravity="center"
                android:padding="5dp"
                android:textStyle="bold" />
        </LinearLayout>

    </android.support.v7.widget.CardView>

    <LinearLayout
        android:orientation="vertical"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_gravity="center"
        android:maxWidth="400dp"
        android:minWidth="400dp">

        <android.support.v7.widget.CardView
            android:id="@+id/bootimage_card"
            android:layout_gravity="center"
            android:layout_height="wrap_content"
            android:layout_marginBottom="4dp"
            android:layout_marginLeft="5dp"
            android:layout_marginRight="5dp"
            android:layout_marginTop="6dp"
            style="?attr/cardStyle"
            app:cardUseCompatPadding="true"
            android:layout_width="match_parent">

            <LinearLayout
                android:orientation="vertical"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_marginTop="15dp"
                android:layout_marginBottom="15dp">

                <TextView
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_gravity="center"
                    android:gravity="center"
                    android:paddingBottom="10dp"
                    android:text="@string/boot_image_title"
                    android:textStyle="bold" />

                <LinearLayout
                    android:orientation="horizontal"
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:layout_marginEnd="15dp"
                    android:layout_marginStart="15dp">

                    <Spinner
                        android:layout_width="0dp"
                        android:layout_height="match_parent"
                        android:id="@+id/block_spinner"
                        android:layout_weight="1" />

                    <Button
                        android:text="@string/detect_button"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:id="@+id/detect_bootimage"/>
                </LinearLayout>

            </LinearLayout>

        </android.support.v7.widget.CardView>

        <android.support.v7.widget.CardView
            android:id="@+id/install_option_card"
            android:layout_gravity="center"
            android:layout_height="wrap_content"
            android:layout_marginBottom="4dp"
            android:layout_marginLeft="5dp"
            android:layout_marginRight="5dp"
            android:layout_marginTop="6dp"
            style="?attr/cardStyle"
            app:cardUseCompatPadding="true"
            android:layout_width="match_parent">


            <LinearLayout
                android:orientation="vertical"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_marginTop="15dp"
                android:layout_marginBottom="15dp">

                <TextView
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_gravity="center"
                    android:gravity="center"
                    android:paddingBottom="10dp"
                    android:text="@string/advanced_settings_title"
                    android:textStyle="bold" />

                <CheckBox
                    android:text="@string/keep_force_encryption"
                    android:id="@+id/keep_force_enc"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_marginEnd="25dp"
                    android:layout_marginStart="25dp" />

                <CheckBox
                    android:text="@string/keep_dm_verity"
                    android:id="@+id/keep_verity"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_marginEnd="25dp"
                    android:layout_marginStart="25dp" />

            </LinearLayout>
        </android.support.v7.widget.CardView>

        <android.support.v7.widget.CardView
            android:id="@+id/flash_button"
            android:layout_gravity="center"
            android:layout_height="wrap_content"
            android:layout_marginBottom="4dp"
            android:layout_marginLeft="5dp"
            android:layout_marginRight="5dp"
            android:layout_marginTop="6dp"
            style="?attr/cardStyle"
            app:cardUseCompatPadding="true"
            android:layout_width="match_parent"
            android:foreground="?android:attr/selectableItemBackground"
            android:clickable="true">

            <LinearLayout
                android:orientation="horizontal"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_marginTop="5dp"
                android:layout_marginBottom="5dp"
                android:layout_marginEnd="25dp"
                android:layout_marginStart="25dp">

                <ImageView
                    android:layout_width="50dp"
                    android:layout_height="wrap_content"
                    app:srcCompat="@mipmap/ic_launcher"
                    android:id="@+id/imageView"
                    android:layout_weight="0"
                    android:layout_marginEnd="20dp"/>

                <TextView
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:text="@string/magiskify"
                    android:ems="10"
                    android:gravity="center"
                    android:layout_weight="1"
                    android:textStyle="bold"
                    android:textAllCaps="false"
                    android:textSize="20sp"
                    android:fontFamily="sans-serif" />

                <FrameLayout
                    android:layout_width="50dp"
                    android:layout_height="match_parent"
                    android:layout_weight="0"
                    android:layout_marginStart="20dp">

                </FrameLayout>

            </LinearLayout>

        </android.support.v7.widget.CardView>


    </LinearLayout>

</LinearLayout>