kbsintranett/app/src/main/res/layout/fragment_handbook_detail.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:background="@color/white">

    <androidx.appcompat.widget.Toolbar
        android:id="@+id/detail_toolbar"
        android:layout_width="match_parent"
        android:layout_height="?attr/actionBarSize"
        android:background="@color/kbs_very_light_blue"
        android:elevation="4dp"
        app:navigationIcon="@android:drawable/ic_menu_revert"
        app:titleTextColor="@color/black" />

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <WebView
            android:id="@+id/detail_webview"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:scrollbars="vertical" />

        <ProgressBar
            android:id="@+id/detail_loading"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerInParent="true"
            android:visibility="gone"/>

    </RelativeLayout>

</LinearLayout>