MuHua-UIElements/Assets/UI Toolkit/Document/TestDocument.uxml

<ui:UXML xmlns:ui="UnityEngine.UIElements" xmlns:uie="UnityEditor.UIElements" xsi="http://www.w3.org/2001/XMLSchema-instance" engine="UnityEngine.UIElements" editor="UnityEditor.UIElements" noNamespaceSchemaLocation="../../../UIElementsSchema/UIElements.xsd" editor-extension-mode="False">
    <Style src="project://database/Assets/UI%20Toolkit/Document/Document.uss?fileID=7433441132597879392&amp;guid=9205939af30a4394f8f2e34232b27890&amp;type=3#Document" />
    <ui:VisualElement name="Menu" picking-mode="Ignore" class="document-page" style="flex-grow: 1; align-items: flex-start;" />
</ui:UXML>