Gap at top of post?

Hi Guys,

Apologies in advance, I’m pretty new to wordpress and web development in general. Hoping this is an easy one, but I’ve tried what I can find on google and on the support forums with no luck.

At the top of the first post I’ve put on my blog there is a small gap below the top of the window and the slider I’ve placed. I can’t see any reason for this gap to exist, and on my main page it’s not there… just on the post. Check it out here: https://thelostcanuck.com/hot-cold-in-iceland/

Any advice?

Cheers

Steve