btcpayserver/BTCPayServer/Views/Shared/Confirm.cshtml

@model BTCPayServer.Abstractions.Models.ConfirmModel

@{
    ViewData["Title"] = Model.Title;
    Layout = "_LayoutSimple";
}

@section PageHeadContent {
    <style>
        body > .content-wrapper { flex-grow: 1; display:  flex; }
        body > .content-wrapper, body > .content-wrapper > .container { flex-grow:1; }
        .modal-dialog .btn-close { display: none; }
    </style>
}

@section PageFootContent {
    <script>
        delegate('click', '#ConfirmCancel', function () {
            history.back();
        })
    </script>
}
<div class="modal position-static d-block" tabindex="-1">
    <partial name="ConfirmModal" model="Model" />
</div>