Custom buton lines stack on each other.(No solution yet)

custom_button.xml

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">

    <item android:top="-6dp"
        android:left="-6dp"
        android:right="-6dp"
        android:bottom="5dp">
        <shape android:shape="rectangle">
            <stroke android:color="#9FB3CF" android:width="3dp"/>
        </shape>
    </item>

    <item android:top="700dp"
        android:left="100dp"
        android:right="100dp"
        android:bottom="0dp">
        <shape android:shape="line" android:tint="@color/colorPrimary">
            <stroke android:color="#ffffff" android:width="7dp"/>
        </shape>
    </item>

</layer-list>