Example of implementing shadow effect using css3-CSS Tutorial-php.cn

Example of implementing shadow effect using css3

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Release： 2017-11-20 17:14:09

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CSS3 is an upgraded version of CSS technology, and CSS3 language development is developing towards modularity. The previous specification was too large and complex as a module, so it was broken down into smaller modules and more new modules were added. These modules include: box model, list module, hyperlink method, language module, background and border, text effects, multi-column layout, etc. In this chapter, we will tell you a simple CSS3 shadow effect example. You can use the shadow property of CSS3 to add a shadow effect to elements of a web page. This is a new feature. However, this feature only works on browsers that support CSS3, such as Firefox 3.5, Safari 3.1 +, and Google Chrome.

Let’s talk about how to use the shadow attribute of css3.

css3 shadow mainly uses the box-shadow attribute. The syntax format of this attribute is as follows:

box-shadow:

The above attribute values have the following meanings:

horizontal (horizontal): Specify the horizontal offset shadow. Positive values (ie: 5px) will shift the shadow to the right, while negative values (ie: - 10px) will bias it to the left.
vertical: Specifies a vertical offset shadow. Positive values (ie: - 5px) will make the shadow at the bottom of the box, while negative values (ie: - 10px) will bias it upwards.
blur (blur): Set the softening radius. The default value is 0, which means no blur. Positive values increase blur, while negative values actually shrink shadows. This property defaults to 0.
clolor (color): color value, that is, setting the shadow color.

Reminder: This attribute can be added to any element, such as pictures, Div, SPAN, P tags, etc.

Let’s look at a specific shadow example. The following is an example of the effect and the specific code:

<html xmlns="http://www.phpernote.com/">
<head>
<title>CSS3阴影效果实例</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<style type="text/css">
#shadow {
box-shadow: 10px 10px 5px #888888;
width:500px;
padding:5px;
text-align:center;
font-size:20px;
background:#21759b;
margin:0 auto;
color:#ffffff;
}
</style>
</head>
<body>
<div id="shadow">矩形的 CSS3 的阴影</div>
</body>
</html>

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The above is a simple tutorial on css3, I hope it can help everyone.

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