The Z-index of CSS

Source: Internet
Author: User

To Z-index can be used, it is necessary to match the positioning element using the position

If the anchor element Z-index does not occur nested:

1. Criteria for catching up

2. Which is big and which one

For example

If the anchor element z-index occurs nested:

1. Ancestor priority principle;

For example

Other properties that participate in cascading contexts

1.display:flex affects cascade, and child element mates Z-index not auto

2.opacity is not 1.

3. Add rotate to the element

The Z-index of CSS

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