Remove sticky headers. See https://alisdair.mcdiarmid.org/kill-sticky-headers/.

killSticky.js

// bookmarklet-title: Kill Sticky
// See https://alisdair.mcdiarmid.org/kill-sticky-headers/

var i, elements = document.querySelectorAll('body *');

for (i = 0; i < elements.length; i++) {
  if (getComputedStyle(elements[i]).position === 'fixed') {
    elements[i].parentNode.removeChild(elements[i]);
  }
}