For example, if you render a component, the parent can capture its events regardless of whether it’s implemented using portals. Answer 2: I wrap everything in a container div. And its possible to set this via Bootatrsaps popover() boundary property. .if I add position:absolute, position:relative or position:fixed to the html and body, it fixes the issue. Any overflow value other than visible and no height is the enemy of child elements with position: sticky. Even we minimize or maximize the page also its position fixed only. This fixed position always sticks to a specific location and it can’t be moved any side of the page. This position property is used to align the elements at the desired location. createRoot (appRoot ) Ĭatching an event bubbling up from a portal in a parent component allows the development of more flexible abstractions that are not inherently reliant on portals. I can fix the issue by setting the boundariesElement to window or viewport. In CSS Position Fixed, fixed is a value applied with position property. Position sticky will most probably not work if overflow is set to hidden, scroll, or auto on any of the parents of the element. Since these elements are only accessibly when the container is “open”, you can take advantage and set the overflow back to visible after the container is fully open, and then set it back to hidden before trying to animate the container back to height: 0.Render ( ) const root = ReactDOM. Unfortunately it seems to be impossible to nest a fixed element within another element (fixed or not) and expect the outer element to wrap it and hide any overflow. To solve this, I added position:relative to the container. Heres a screenshot to demonstrate: This overflow bug is documented well and exists in IE6 as well. Yet whenever it drops outside the parent. The key thing to notice in this CSS is the overflow set to the container, and the positioning set to element B. Usually you have something inside the container that you want to overflow regardless. I have a div that is set to overflow:hidden which is what I want but nested a couple levels inside I have a drop down menu that is absolute positioned.

I also want to note, a very common use case for the desire to have an element overflow its container in this way is when you want animate the height of a dropdown or container from X to 0, and therefore need to have overflow: hidden on the container.

Position fixed overflow hidden