background_overlay.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">
    <corners android:radius="@dimen/_2sdp" />
    <padding
        android:bottom="@dimen/padding_small"
        android:left="@dimen/padding_small"
        android:right="@dimen/padding_small"
        android:top="@dimen/padding_small" />
    <solid android:color="@color/background_overlay" />
</shape>