I've been thinking about better ways to display footnotes in eBooks. So this is my horrible and hacky way to display inline footnotes in pure HTML and CSS. No Javascript. Here's how it works: HTMLThe most cited work in history, for example, is a 1951 paper    <details>       <summary>1</summary>       Lowry, O. H., Rosebrough, N. J., Farr, A. L. Randall, R. J. J. Biol. Chem. 193, 265–275 (1951).    </details> describing an assay to determine the amount of protein in a solution. I've use <…