Showing an absolutely positioned div (with a width greater than its parent) when hovering over the parent element causes it to extend behind the next sibling in an Angular application

With three divs, each containing two child elements, the challenge is to display the second child (hidden & absolutely positioned) upon hovering over the first child. While it may seem straightforward, the issue arises when the absolute positioning causes the second child to hide behind the next sibling of the parent element.

https://i.sstatic.net/LD5GM.png

I have attempted various approaches, including dynamically adjusting z-index, but without success. My goal is to achieve this using CSS exclusively.


.wrapper{
width: 100%;
display: flex;
}
.div{
margin: 0em 1em;
position: relative;
}
.divIn{
width: 190px;
height: 260px;
background: red;
}
.divHover{
display: none;
position: absolute;
left: 0%;
bottom: 2em;
width: 500px;
height: 100px;
background: black;
}
.divIn:hover ~ .divHover, .divHover:hover{
display: block;
}
.clearfix{
clear: both;
}

<div class="wrapper">
    <div class="div">
        <div class="divIn"></div>
        <div class="divHover"></div>
    </div>
    <div class="div">
        <div class="divIn"></div>
        <div class="divHover"></div>
    </div>
    <div class="div">
        <div class="divIn"></div>
        <div class="divHover"></div>
    </div>
    <div class="clearfix"></div>
</div>

When hovering over the first element, the hidden second element should be displayed without going behind the next sibling of the parent.

Answer №1

Resolved by including the following CSS styling:

.div:nth-child(1) {
  z-index: 3;
}
.div:nth-child(2) {
  z-index: 2;
}
.div:nth-child(3) {
  z-index: 1;
} 

Explanation:

Typically, elements are stacked based on their order in the DOM (the lower one within the same hierarchy level appears on top), therefore the second .div is positioned above the first one. This explains why .divs tend to be displayed behind their subsequent siblings.

Even when you assign a higher z-index value to the child .divHover of the first .div, it remains a child of that specific .div which is situated beneath the second .div, thus preventing your intended outcome from being achieved.

In order to address this issue, you must elevate the first .div above the second one. Refer to the examples provided here CSS Tricks for further guidance.

Answer №2

To ensure that the solution appears above the next sibling of its parent div, apply a z-index to the "divHover" class as the second child.

.divHover {z-index: 9;}

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