I am new in Android Programming. I have a Sign in button in the application.

```
<Button
        android:text="Sign In"
        android:layout_width="match_parent"
        android:layout_weight="20"
        android:layout_height="0dp"
        android:id="@+id/btnSignIn"
        android:background="@drawable/ButtonSignInStyle"
        android:layout_marginLeft="20dp"
        android:layout_marginRight="20dp"
        android:textSize="15sp"
        android:layout_marginTop="2dp" />

```

and my ButtonSignInStyle.xml file is as follows

```
<selector xmlns:android="https://schemas.android.com/apk/res/android">

  <item android:state_pressed="false">
    <layer-list>
      <item android:right="5dp" android:top="5dp">
        <shape>
          <corners android:radius="2dp"/>
          <solid android:color="#D6D6D6"/>
        </shape>
      </item>
      <item android:bottom="2dp" android:left="2dp">
        <shape>
          <gradient android:angle="270" android:endColor="#B3E5FC" android:startColor="#B3E5FC"/> 
          <stroke android:width="1dp" android:color="#BABABA"/>
          <corners android:radius="4dp"/>
          <padding android:bottom="10dp" android:left="10dp" android:right="10dp" android:top="10dp"/>
        </shape>
      </item>
    </layer-list>
  </item>

  <item android:state_pressed="true">
    <layer-list>
      <item android:right="5dp" android:top="5dp">
        <shape>
          <corners android:radius="2dp" />
          <solid android:color="#D6D6D6"/>
        </shape>
      </item>
      <item android:bottom="2dp" android:left="2dp">
        <shape>
          <gradient android:angle="270" android:endColor="#E1F5FE" android:startColor="#B3E5FC"/>
          <stroke android:width="1dp" android:color="#BABABA"/>
          <corners android:radius="4dp"/>
          <padding android:bottom="10dp" android:left="10dp" android:right="10dp" android:top="10dp"/>
        </shape>
      </item>
    </layer-list>
  </item>

</selector>

```

But button dissapears when i run the program. In fact, it does not dissapear, I can see very light gray "Sign In" text in the middle.

What am I doing wrong?

Screenshot:[Sign In button is above The Sign Up Button](https://i.stack.imgur.com/JzlY8.png)