silverstripe-webpack/app/templates/SilverStripe/Blog/Model/Layout/Blog.ss

<div id="PageContainer" class="page{$CSSClass} action{$Action}">
	<% include Content %>

	<div class="page-content">
		<div class="element">
			<div class="container blog-post-list">

				<% if $ArchiveYear %>
					<span class="action-title"><%t SilverStripe\\Blog\\Model\\Blog.Archive 'Archive' %>:</span>
					<% if $ArchiveDay %>
						<h2 class="content-element__title subcategory">$ArchiveDate.Nice</h2>
					<% else_if $ArchiveMonth %>
						<h2 class="content-element__title subcategory">$ArchiveDate.format('F, Y')</h2>
					<% else %>
						<h2 class="content-element__title subcategory">$ArchiveDate.format('Y')</h2>
					<% end_if %>
				<% else_if $CurrentTag %>
					<h2 class="content-element__title subcategory">
						<span class="action-title"><%t SilverStripe\\Blog\\Model\\Blog.Tag 'Tag' %>:</span>
						$CurrentTag.Title
					</h2>
				<% else_if $CurrentCategory %>
					<h2 class="content-element__title subcategory">
						<span class="action-title"><%t SilverStripe\\Blog\\Model\\Blog.Category 'Category' %>:</span>
						$CurrentCategory.Title
					</h2>
				<% end_if %>

				<% if $PaginatedList.Exists %>
					<div class="row">
						<% loop $PaginatedList %>
							<div class="col-sm-3 col-md-3">
								<% include BlogPostInfo %>
							</div>
						<% end_loop %>
					</div>
				<% else %>
					<p class="alert alert-info">
						<%t SilverStripe\\Blog\\Model\\Blog.NoPosts 'There are no posts' %>
					</p>
				<% end_if %>

				<% with $PaginatedList %>
					<% include Objects\Pagination %>
				<% end_with %>

				$CommentsForm
			</div>
		</div>
    </div>
</div>

<%-- include SilverStripe\\Blog\\BlogSideBar --%>