CSS-Only Footnote Tooltips in Hugo

The blog now shows the text of a footnote when you hover over its citation number, so you can read a reference without jumping to the bottom of the page and back. 1 It involves one Hugo partial and a few CSS rules. I&rsquo;ve been envious of other blog&rsquo;s footnote popovers that usually come from a JavaScript library such as Bigfoot or littlefoot, which assemble the bubbles in the…