Hiding ribbon except for admin in SharePoint 2010

Scenario:

Client wanted to hide the ribbon from everyone except admin.

Solution:

Open your SharePoint master page

Add the following style in head section

style type="text/css">  
#s4-ribbonrow { display : none; }   
</style>

Now find the start of the "s4-ribbonrow" tag and add following this:

<Sharepoint:SPSecurityTrimmedControl ID="SPSecurityTrimmedControl2" runat="server" PermissionsString="AddAndCustomizePages">  

<style type="text/css">  

#s4-ribbonrow { display : block; }  

</script>
</Sharepoint:SPSecurityTrimmedControl>  

Save the new master page and publish it.