The brother remains in the background, even though he has a higher z-index

Can you explain why the first sibling in this code doesn't appear in front despite having a higher z-index?

   
<div style="z-index: 100000000000000000000000000000000000000000;position: fixed;">why its not in front?</div>

<div style="
    height: 110px;
    width: 60px;
    background: red;
    display: block;
    position: fixed;
    z-index: 100000000000000000000000000000000000;
"></div>

Answer №1

If the z-index you've set is out of range, it won't work properly. Make sure to use a value within the allowable range:

<div style="z-index: 1;position: fixed;">why isn't it coming to the front?</div>
<div style="
    height: 110px;
    width: 60px;
    background: red;
    display: block;
    position: fixed;
    z-index: 0;
"></div>

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