Yuito-app-android/app/src/main/res/layout/fragment_search.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="?attr/tab_page_margin_drawable">

    <FrameLayout
        android:layout_width="@dimen/timeline_width"
        android:layout_height="match_parent"
        android:layout_gravity="center">

        <androidx.recyclerview.widget.RecyclerView
            android:id="@+id/searchRecyclerView"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_gravity="center"
            tools:listitem="@layout/item_account"
            android:background="?attr/window_background" />

        <ProgressBar
            android:id="@+id/searchProgressBar"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:indeterminate="true"
            android:visibility="gone" />

        <TextView
            android:id="@+id/searchNoResultsText"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:text="@string/search_no_results"
            android:visibility="gone" />
    </FrameLayout>

</androidx.coordinatorlayout.widget.CoordinatorLayout>