Can't get rid of nav-above

Hi Guys

Got a bizarre problem here, I hope someone can help. If you look at this site:
https://handcrafted-soap.co.uk/2010/08/hand-heart-hand-balm-lemongrass-grapefruit/
I have used display: none to hide various elements. But I can’t get nav-above to disappear.

Any ideas please?

One final question is there a better way of removing these elements.

Rich