@using ClientDependency.Core.Mvc
@using hbehr.recaptcha
@using LeafWeb.WebCms.Controllers
@model ContactForm
@{
    Html.RequiresJs("~/scripts/jquery.validate.min.js", 2);
    Html.RequiresJs("~/scripts/jquery.validate.unobtrusive.min.js", 2);
    Html.RequiresJs("~/scripts/jquery.validate.unobtrusive.bootstrap.js", 2);
    Html.RequiresJs("~/scripts/jquery.validate.custom.js", 2);
}
<script type="text/javascript">function submit() { $('form').submit(); }</script>

<div class="container mt-4">
    <div class="row justify-content-center">
        <div class="col-md-6 ">
            @Html.Partial("_ValidationSummary")

            @using (Html.BeginUmbracoForm<ContactController>("Submit"))
            {
                @Html.EditorFor(m => m.Name)
                @Html.EditorFor(m => m.Email)
                @Html.EditorFor(m => m.Message)
                @ReCaptcha.GetInvisibleCaptcha("submit", "Send")
                @* Restyling this button does not appear to allow it to continue operating *@
            }
        </div>
    </div>
</div>