CSS background-position

A div takes the upper left corner as the origin, the right direction is the positive direction of X, and the downward direction is the positive direction of Y

To place an image element as a background anywhere in a div, use this property

 

初始：background: url("../img/globalHeaderFontChangeListBg.png") no-repeat;

 

background: url("../img/globalHeaderFontChangeListBg.png") no-repeat 0px 3px;

 

background: url("../img/globalHeaderFontChangeListBg.png") no-repeat 439px 3px;

 

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This property works with the CSS :hover selector to simulate button animations

 1. First set up an area and set the original model

　　

2. Split the area with label a (hidden text)

　　

3. Each a label area uses the :hover selector to set the hover background and mouse style