Use system defined card corners instead of hardcoding to 8.

        <item name="android:layout_marginBottom">@dimen/homepage_card_vertical_margin</item>

        <item name="android:layout_marginStart">@dimen/homepage_card_side_margin</item>

        <item name="android:layout_marginEnd">@dimen/homepage_card_side_margin</item>

        <item name="cardCornerRadius">8dp</item>

        <item name="cardCornerRadius">@*android:dimen/config_dialogCornerRadius</item>

        <item name="cardElevation">0dp</item>

        <item name="strokeColor">@color/homepage_card_stroke_color</item>

        <item name="strokeWidth">1dp</item>