Reduce space between post title and content

Hi,

I want to reduce the gap between the post title and the content, could anyone let me know? There is a huge gap when I put text/photos right below it, but it’s fine if I put a Giphy.

For example, if you look at my third post ‘Time Management’, the gap is much smaller (which is how I would prefer it to be!)

Thanks in advance,
https://www.toomanytabs.co

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