cloudstream/app/src/main/res/drawable/outline_card.xml

<?xml version="1.0" encoding="utf-8"?>
<ripple xmlns:android="http://schemas.android.com/apk/res/android"
        android:color="@android:color/white">

    <item>
        <shape android:shape="rectangle">
            <stroke
                    android:width="2dp"
                    android:color="@android:color/white" />
            <corners android:radius="2dp" />
        </shape>
    </item>

    <item android:id="@android:id/mask">
        <shape android:shape="rectangle">
            <corners android:radius="2dp" />
            <solid android:color="?attr/iconGrayBackground" />
        </shape>
    </item>

</ripple>