Topic is adding elements to displayed page

The Default Topic Template contains the following HTML:

<div class="page topic-page" id="ph-topic">
    <div class="page-title" id="ph-title">
        <h1>@Model.Title</h1>
    </div>
    <div class="page-body">
        @Html.Raw(Model.Body)
    </div>
</div>

However, when the view is rendered for the HomePageText topic / page it appears that nopCommerce surrounds and prefixes the 'Model.Body' content with the following additional elements:

<div class="mt-3">
<p class="lead"></p>
....'Model.Body' content....
</div>

I would like to know whereabouts in the codebase these elements are added so that I can remove them.

Thanks.

Regards

Walter