Css implementation, when the mouse is suspended, it indicates the effect of the layer, css when

Css implementation, when the mouse is suspended, it indicates the effect of the layer, css when

When the css is implemented, the following figure shows the effect of the layer:
This section shares an example of code. It uses the css-only method to show the effect of the layer.
The code example is as follows:

<! DOCTYPE html> 
By default, the span element is hidden. When the mouse is suspended, the following CSS Code takes effect immediately:
a.alt:hover span{  position:absolute;  display:block;  top:-1px;  left:158px;  width:130px;  height:30px;  border:1px solid #eee;  z-index:1;}
Use absolute positioning to locate the pop-up layer on the right of the link.
The original address is: http://www.softwhy.com/forum.php? Mod = viewthread & tid = 18143.
For more information, see: http://www.softwhy.com/divcss/