silverstripe-cms/templates/Includes/AssetAdmin_Content.ss

<div id="assetadmin-cms-content" class="cms-content center cms-tabset $BaseCSSClasses" data-layout-type="border" data-pjax-fragment="Content">

	<% with $EditForm %>
	<div class="cms-content-header north">
		<div class="cms-content-header-info">
			<% include BackLink_Button %>


			<% with $Controller %>
				<% include CMSBreadcrumbs %>
			<% end_with %>

		</div>
		<% if $Fields.hasTabset %>
			<% with $Fields.fieldByName('Root') %>
			<div class="cms-content-header-tabs">
				<ul class="cms-tabset-nav-primary">
				<% loop $Tabs %>
					<li<% if $extraClass %> class="$extraClass"<% end_if %>><a href="#$id">$Title</a></li>
				<% end_loop %>
				</ul>
			</div>
			<% end_with %>
		<% end_if %>
	</div>

	<div class="cms-content-fields center ui-widget-content" data-layout-type="border">
		$Top.Tools
		$forTemplate
	</div>
	<% end_with %>

</div>