How to add css in .cshtml file

Question

HI 
I have tried adding css in .cshtml file but it is not working

<link href="/skins/base/css/invoicepdf.css" rel="stylesheet" type="text/css" />

<link href="/skins/base/css/saxtable.css" rel="stylesheet" type="text/css" />

 

tried like this also

@section Scripts{

<link href="/skins/base/css/invoicepdf.css" rel="stylesheet" type="text/css" />

<link href="/skins/base/css/saxtable.css" rel="stylesheet" type="text/css" />

}

 

How to add this files in .cshtml