Returns an element's offset relative to its parent.
Similar to element.offsetTop and element.offsetLeft, except the parent doesn't have to be positioned relative or absolute.
NOTE: This was created to work around what appears to be a bug in Chrome where a slotted element's offsetParent seems to ignore elements inside the surrounding shadow DOM: https://bugs.chromium.org/p/chromium/issues/detail?id=920069
Returns an element's offset relative to its parent.
Similar to element.offsetTop and element.offsetLeft, except the parent doesn't have to be positioned relative or absolute.
NOTE: This was created to work around what appears to be a bug in Chrome where a slotted element's offsetParent seems to ignore elements inside the surrounding shadow DOM: https://bugs.chromium.org/p/chromium/issues/detail?id=920069