In CSS, you can set one or more drop-down shadow boxes through the "box-shadow" attribute. The syntax is such as "box-shadow: h-shadow v-shadow blur spread color inset;". The attribute is a comma separated list of shades.
The operating environment of this article: Windows 7 system, Dell G3 computer, HTML5&&CSS3 version.
The box-shadow property can set one or more drop-down shadow boxes.
默认值:none 继承:no 版本:CSS3 JavaScript 语法:object.style.boxShadow="10px 10px 5px #888888"
Syntax
box-shadow: h-shadow v-shadow blur spread color inset;
Note: The boxShadow property adds one or more drop-down shadows to the box. This property is a comma-separated list of shades, each shade specified by 2-4 length values, an optional color value, and an optional inset keyword. The value for omitted length is 0.
值 h-shadow必需的。水平阴影的位置。允许负值 v-shadow必需的。垂直阴影的位置。允许负值 blur可选。模糊距离 spread可选。阴影的大小 color可选。阴影的颜色。在CSS颜色值寻找颜色值的完整列表 inset可选。从外层的阴影（开始时）改变阴影内侧阴影
[Recommended learning: css video tutorial]
Code example:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>菜鸟教程(runoob.com)</title>
<style>
div
{
width:300px;
height:100px;
background-color:yellow;
box-shadow: 10px 10px 5px #888888;
}
</style>
</head>
<body>
<div></div>
</body>
</html> Effect:
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