how to set margin to bottom sheet in a fragment ?

i have a linear layout at bottom of fragment and now i want to expand bottom sheet from top of that linear layout

`android:layout_marginBottom="36dp"` not works and bottom sheet covers linear layout.

here is my code :

```
<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="36dp"
    android:background="@drawable/shadow"
    android:layout_gravity="bottom">

    <ImageView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@mipmap/ic_add_white_24dp" />
</LinearLayout>

<LinearLayout
    android:id="@+id/bottom_sheet"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="#ff0000"
    app:behavior_hideable="true"
    app:layout_behavior="android.support.design.widget.BottomSheetBehavior"
    android:layout_marginBottom="36dp">

    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Test" />

</LinearLayout>

```