Styling columns
Id Name Surname Marital status Bolded age Birthday Employed
1 Joe Crosswave Married 36 1/5/1988 False
2 Merry Lisel Widowed 46 5/6/1978
3 Henry Crux Single 34 11/19/1990 True
4 Cody Jurut 54 8/11/1970 False
5 Simon Scranton Single 39 10/10/1985
6 Leena Laurent Divorced 24 7/1/2000 False
7 Ode Cosmides Married 58 4/17/1966 True
8 Diandra Mizner Single 25 8/20/1999 False
9 Pete Cassel Married 27 3/13/1997 False
10 Nicky Tremblay Married 36 1/5/1988 True
View 

@model IQueryable<Person>

@(Html
    .Grid(Model)
    .Build(columns =>
    {
        columns.Add(model => model.Id).Css("collapse");

        columns.Add(model => model.Name).Titled("Name");
        columns.Add(model => model.Surname).Titled("Surname");
        columns.Add(model => model.MaritalStatus).Titled("Marital status");

        columns.Add(model => model.Age).Titled("Bolded age").Css("bolded");
        columns.Add(model => model.Birthday).Titled("Birthday").Formatted("{0:d}");
        columns.Add(model => model.IsWorking).Titled("Employed");
    })
)
Css 

<style>
    .collapse {
        display: none;
    }

    .bolded {
        font-weight: bold;
    }
</style>