@using (Html.BeginForm()
{
<div class="form-horizontal">
    @Html.AntiForgeryToken()
    @Html.ValidationSummary(true, "", new { @class = "text-danger" })
    <div class="form-group has-feedback">
        <div class="float:left">
            @Html.Label("First Name:", htmlAttributes: new { @class = "control-label col-md-2", @for = "fname" })
            <div class="col-md-3">
                 @Html.EditorFor(model => model.Person.fName, new { htmlAttributes = new { @class = "form-control" }, name = "fname", id = "fname" })
            </div>
        </div>

.has-error input {background-color:red;}