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21 Δεκ 2022 · If you are using less or scss or css 3, you can take advantage of their variables and define global constants for menus z-indexes. It makes it more clear for additional developers working on the same project.
img {. position: absolute; left: 0px; top: 0px; z-index: -1; } Try it Yourself ». Note: z-index only works on positioned elements (position: absolute, position: relative, position: fixed, or position: sticky) and flex items (elements that are direct children of display: flex elements).
20 Σεπ 2022 · Without any z-index value, elements stack in the order that they appear in the DOM (the lowest one down at the same hierarchy level appears on top). Elements with non-static positioning will always appear on top of elements with default static positioning.
4 Απρ 2024 · Here's the deal: z-index only works on positioned elements. So if you set z-index on an element with position: static (the default), it won't do anything at all. The z-index is entirely ignored for non-positioned elements. Let's look at another code example to illustrate this point...
The z-index property specifies the stack order of an element. An element with greater stack order is always in front of an element with a lower stack order.
25 Μαΐ 2023 · The z-index attribute lets you adjust the order of the layering of objects when rendering content. In CSS 2.1, each box has a position in three dimensions. In addition to their horizontal and vertical positions, boxes lie along a "z-axis" and are formatted one on top of the other.
26 Ιουλ 2024 · If you want to create a custom stacking order, you can use the z-index property on a positioned element. The z-index property can be specified with an integer value (positive, zero, or negative), which represents the position of the element along an imaginary z-axis.