app/src/main/res/values/mainCardViewStyle.xml
<?xml version="1.0" encoding="utf-8"?>
<resources>
<style name="mainCardViewStyle" parent="@style/CardView">
<item name="android:layout_width">0dp</item>
<item name="android:layout_height">0dp</item>
<item name="android:layout_margin">18dp</item>
<item name="android:foreground">?attr/selectableItemBackground</item>
</style>
</resources>