Ways to troubleshoot issues concerning z-index and overflow in CSS

Find my code in the sandbox: https://codesandbox.io/s/vibrant-microservice-4rplf

I am working with select and modal components. Currently, when I click on the select component, it opens inside the modal causing a scroll to appear.

https://i.sstatic.net/6lZiO.png

My goal is to have the select display over the modal as shown in the image below. I was able to achieve this by removing the overflow:scroll from the modal component. However, I need to keep overflow:scroll for cases where the modal expands. I suspect there may be an issue with z-index. Any help in solving this problem would be greatly appreciated.

https://i.sstatic.net/jENdE.png


.modal-block {
  overflow-y: scroll;
  width: 60% !important;
  max-height: 300px;
  margin-top: 100px;
  background: #fff;
  border-radius: 4px;
  z-index: 1111;
}

.select-wrapper {
  width: 100%;
  position: relative;
  z-index: 1600;
}

Answer №1

To enhance the scrolling functionality, include overflow-y:scroll; within the .modal-wrapper class while excluding overflow-y: scroll; and max-height: 300px; from the .modal-block styling. For further reference, please view the example in this sandbox link Sandbox example

Answer №2

If you want your "Select" tag to appear at the end of the modal, follow these steps:

Remove overflow-y:scroll; from the .modal-block class.

Add overflow-y:scroll; to the .modal-body class.

Move the .select-wrapper outside of the .modal-body like this:

<div class="modal-block">Content</div>
<div class="select-wrapper">SELECT OPTION</div>

Answer №3

Providing a contrasting viewpoint, I believe it would be more efficient to implement the scroll effect specifically on the text paragraph within the modal block, rather than applying it to the entire block itself. By doing so, it becomes simpler to adjust the height of both the modal block and the contained text paragraph as required.

Check out the code here: https://codesandbox.io/s/suspicious-curran-pzq5j

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