The background of the MailOnline masthead at the top of the home page will be turned icy grey with Iceland branding, before the masthead is "momentarily obscured" as it will "morph" into a message from the retailer for its "Power of Frozen" campaign. It is part of a multiplatform partnership between Mail Brands -- the ad sales arm of the Daily Mail and MailOnline -- and Iceland that celebrates the food company's "Countdown to Christmas" that began on 9 November.