Description: The Z-index is a CSS property that determines the stacking order of elements on a web page. This index is used to control the overlap of elements in the three-dimensional space of the graphical interface, allowing some elements to be displayed above others. The value of the Z-index can be an integer, where a higher value indicates that the element will stack above those with a lower Z-index. By default, all elements have a Z-index of auto, meaning they stack in the order they appear in the document. However, by assigning a specific Z-index, developers can manipulate the visual presentation of elements, which is especially useful in situations where certain elements, such as modals or dropdown menus, need to be displayed above other content. It is important to note that the Z-index only affects elements that have a defined position (relative, absolute, fixed, or sticky). This property is fundamental in modern web design, as it allows for the creation of more dynamic and engaging interfaces, enhancing the user experience when interacting with the page content.
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