I want to create a popover dialog using Reach UI like Reakit Non-modal Dialogs. Styling DialogOverlay and DialogContent seems to be not enough because the dialog is rendered inside a Portal in body: Setting position: absolute on DialogContent (or DialogOverlay) does not work because the dialog is rendered using a Portal in the body, so its position is relative to the entire page and not to its container element. The PR 901 seems to address the issue. Is there any workaround to reach the result without forking the library?