silverstripe-webpack/app/templates/Includes/Content.ss

<div class="page-content page-content-main">
    <% if not $ExcludeHeader %>
        <% include PageHeader %>
    <% end_if %>

    <% if $CurrentElement %>
        <div class="current-element">
            $CurrentElement
        </div>
    <% else %>
        <div class="elemental-area">
            <% if $ElementalArea.Elements.Count %>
                $ElementalArea
            <% else %>
                <div class="element element_content_field dnadesign__elemental__models__elementcontent">
                    <div class="element-container {$DefaultContainer}">
                        <% include DNADesign\Elemental\Models\ElementContent HTML=$Content %>
                    </div>
                </div>
            <% end_if %>
        </div>
    <% end_if %>

    <% if $Form %>
    <div class="page-form-element element">
        <div class="element_container">
            <div class="$DefaultContainer">
                $Form
            </div>
        </div>
    </div>
    <% end_if %>

    <% if $ExtraCode %>
    <div class="page-extra-code">
        <div class="element">
            <div class="element_container">
                <div class="$DefaultContainer">
                    $ExtraCode
                </div>
            </div>
        </div>
    </div>
    <% end_if %>
</div>