Maximum z-index value in CSS: Exploring the Limits

When it comes to the z-index property in CSS, it's important to understand the limits of this value. Z-index is responsible for stacking elements on top of each other, with higher values appearing on top of lower values.

The maximum value for z-index is 2147483647. This value is based on the maximum value for a 32-bit signed integer in computer programming. Any value beyond this maximum will result in unexpected behavior, such as elements disappearing or overlapping in unintended ways.

It's important to note that the need for such a high z-index value is rare in most web design scenarios. In fact, it's recommended to use values below 1000 to avoid potential issues with other CSS properties.

When using z-index, it's also important to consider the stacking context. This refers to the hierarchy of elements and their respective z-index values. Elements within the same stacking context are stacked relative to each other, while elements in different stacking contexts are stacked independently.

In summary, while the maximum value for z-index is 2147483647, it's recommended to use values below 1000 to avoid potential issues. Additionally, it's important to consider the stacking context when using z-index to ensure proper stacking of elements.

/* Example of z-index property */
.element {
  position: relative;
  z-index: 999;
  1. Conclusion


Understanding the limitations of z-index is crucial for web designers and developers. By keeping values below 1000 and considering the stacking context, you can ensure proper stacking of elements and avoid unexpected behavior in your web design projects.

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