Orchard/src/Orchard.Web/Core/Contents/Views/Content.cshtml

@using Orchard.Utility.Extensions;
@{
    if (Model.Title != null) {
        Layout.Title = Model.Title;
    }
    
    var contentTypeClassName = ((string)Model.ContentItem.ContentType).HtmlClassify();
    Html.AddPageClassNames("display-" + contentTypeClassName);
}
<article class="content-item @contentTypeClassName">
    <header>
        @Display(Model.Header)
        @if (Model.Meta != null) {
        <div class="metadata">
            @Display(Model.Meta)
        </div>
        }
    </header>
    @Display(Model.Content)
    @if(Model.Footer != null) {
    <footer>
        @Display(Model.Footer)
    </footer>
    }
</article>