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Margin Footnote Leader
A superscript number in a line of serif text. Hover draws a hairline leader out to the margin, a dot lands at its end and the footnote slides in beside the line.
Also known as: sidenote tooltip css, tufte sidenote, footnote hover css, margin note tooltip.
The margin is never empty 1 1In the Van de Graaf canon the outer margin is twice the inner one.
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Customizing this snippet
- Color: set
--tip-coloron the element or a parent. Currently previewing#3b82f6. - Base size: set
--tip-size. Every other dimension is inem, so the whole thing scales together. Currently previewing16px. - Speed: change the duration on the
transitionoranimationshorthand. Staggered delays are relative, so they keep their rhythm. - Reduced motion: the rule at the end of the CSS turns the motion off for people who asked their OS for less of it. Keep it.