Footnote links don't work when the page size is < 1240px

[20k]

To test this, go to the example page here:

https://sighingnow.github.io/jekyll-gitbook/jekyll/2023-12-12-footnotes.html

Shrink the width of the page to < 1240px, and try to click a footnote. As far as I can tell, this is because of this css selector setting the position to absolute

    .book-body .body-inner {
        position: absolute; //this one
        margin-top: 50px;
        min-height: calc(100% - 50px)
    }
}

But removing it makes the scrollbar overlap with the titlebar

[sighingnow]

Fixed.