<android.support.design.widget.TextInputLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <EditText
            android:id="@+id/et_username"
            android:hint="Username :"
            android:layout_width="match_parent"
            android:layout_height="wrap_content" />


    </android.support.design.widget.TextInputLayout>


    <android.support.design.widget.TextInputLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <EditText
            android:id="@+id/et_password"
            android:hint="Password :"
            android:inputType="textPassword"
            android:layout_width="match_parent"
            android:layout_height="wrap_content" />


    </android.support.design.widget.TextInputLayout>

    <Button
        android:id="@+id/btn_login"
        android:layout_marginTop="20dp"
        android:textColor="#fff"
        android:background="@color/colorPrimary"
        android:text="login"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />