Nivo Slider CSS Positioning Issue

hoping someone may be able to help here; i'v开发者_高级运维e got what appears to be a css glitch on my nivo slider. Each slide is dropping about 20px below where it should appear. See what i mean here; http://whatscooking.goodstuffdesign.co.uk

Any help, is hugely appreciated.

Matt

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You have not included the Nivo Slider CSS file on your page.