title: Prevent element from scrolling with page when position is fixed?
body: <p>Is it possible to make an element have fixed position, but stop it from scrolling with the page?</p>
  
  <p>My problem: I am building a tooltip that I dynamically determine the placement for depending on what space is available on the page for it. It needs to pop up over everything else next to its target element and not take up space. So I initially thought position absolute.</p>
  
  <p>But absolute position is based off of the element's parent wrapper. My page gets wrapped in multiple various wrappers that I have no control over (on Salesforce, but this isn't necessarily a Salesforce specific question). </p>
  
  <p>So I need to position it off of the viewport instead of relying on what parent it ends up getting wrapped in. So position fixed, works great.</p>
  
  <p>The only issue is position fixed has the element scroll with the page. I don't really want the tooltip to follow the user as they scroll. </p>
  
  <p>I feel I need to keep the position based on the viewport due to not being able to control the parent wrappers. But all I have found is position fixed, so not sure if some method exists to stop the element from scrolling with the page.</p>