CSS | z-index Property
The z-index property is used to displace elements on the z-axis i.e in or out of the screen. It is used to define the order of elements if they overlap on each other.
Syntax:
z-index: auto|number|initial|inherit;
Property values:
- auto: The stack order is equal to that of the parent(default).
- number: The stack order depends in the number.
- initial: Sets the property to its default value.
- inherit: Inherits the property from the parent element.
Example 1:
html
<!DOCTYPE html><html><head> <title> z-index Property </title> <style> img { position: absolute; left: 0px; top: 0px; z-index: -1; } h1, p { background-color: green; } </style></head><body> <h1>GeeksforGeeks</h1> <img src= width="400" height="150"> <p>This example shows the use of z-index property.</p></body></html> |
Output:
Example 2:
html
<!DOCTYPE html><html><head> <title> z-index Property </title> <style> img { position: absolute; left: 0px; top: 0px; z-index: +1; } h1, p { background-color: green; } </style></head><body> <h1>GeeksforGeeks</h1> <img src= width="400" height="150"> <p>This example shows the use of z-index property.</p></body></html> |
Output:
In the Example-1 the z-index is set to -1 therefore, the image appears behind the text but in Example-2 when the z-index is set to +1 the image hides the text.
Supported Browsers: The browser supported by z-index property are listed below:
- Google Chrome 1.0
- Edge 12.0
- Internet Explorer 4.0
- Firefox 1.0
- Opera 4.0
- Apple Safari 1.0
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