The `expando` class elements (e.g. the archive button, image button, youtube button) are all divs which have an onclick method. For accessibility, screen readers, and keyboard-based navigation, these elements don't appear as clickable. Adding the `role="button"` attribute to the `div class="expando"` elements will allow this element to show up to the user as a clickable element. For reference, I use vimium on firefox and am not able to click these elements with the keyboard. See also: https://developer.mozilla.org/en-US/docs/Web/Accessibility/ARIA/Roles/button_role