How to access css while using authentication

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C#

ASP.NET

Even after adding css to be allowed without authentication webpage isn't rendering it..

code to make css run:

<location path="Styles/Site.css">
   <system.web>
     <authorization>
       <allow users="*"/>
     </authorization>
   </system.web>
 </location>

also the page to be used without authentication on which this style sheet is needed is taken care.

 <location path="defvd.aspx">
    <system.web>
      <authorization>
        <allow users="*"/>
      </authorization>
    </system.web>
  </location>
<pre lang="c#">

But still defvd is unable to pick style sheet.