HTML and CSS Reference
In-Depth Information
The z-index property takes a positive or negative integer as its value, indicating the
stacking order. Elements with a higher value are in front of elements with a lower value, as
in the following example:
<img src="ace-of-hearts.png" style="
position: absolute;
left: 0;
top: 0;
z-index: 1;">
<img src="ace-of-spades.png" style="
position: absolute;
left: 100px;
top: 100px;
z-index: 0;">
In this example, shown in Figure 21-2 , the ace of hearts is layered on top of the ace of
spades because of its higher stacking order.
Figure 21-2. Customized stacking order
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