Annoying top padding/margin above main content but not right column

There appears to be a small margin above the main content but not above the right column content so I launched Chrome's Inspector but I can't find in the CSS where this is coming from?

template-2.yorweb.co.uk/news/throwing-darts-in-lovers-eyes

Just answering my own question and found the gap is a Bootstrap issue as when I turn off loading Bootstrap, the gap disappears.