Shape drawable as background, a line at the bottom

This is how I got a line at the bottom for mine. Draw a stroke but then shift the item up and to the sides to get the top and sides to not show the stroke:

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:top="-8dp" android:left="-8dp" android:right="-8dp">
        <shape> 
            <solid android:color="#2b7996"/>
            <stroke android:color="#33b5e5" android:width="6dp"/>
        </shape>
    </item>
</layer-list>