Stacking Elements with Z-index in CSS

The z-index property in CSS is used to control the stacking order of elements when they overlap. It accepts integer values, with higher values indicating a higher stacking order. In a scenario where multiple elements have the same z-index value, the one that appears later in the HTML code will be displayed on top. The z-index property only works on positioned elements, which means the element must have a position value of absolute, relative, or fixed. In the provided example, five boxes are stacked on top of each other, with their z-index values determining their order. The box with the highest z-index value, .item3, is displayed on top of all other elements. Changing the z-index value of the blue box (.item) demonstrates how the stacking order can be altered. Understanding z-index is essential for creating complex layouts and overlapping elements in web development. TheDevSpace provides daily coding tips and resources for mastering web development.