How to create a border shadow effect using the box-shadow property of CSS3

高洛峰
Release: 2017-03-13 17:59:24
Original
2709 people have browsed it

这篇文章主要介绍了CSS3的box-shadow属性制作边框阴影效果的方法,box-shadow属性还是十分强大的,能设定阴影的水平或垂直位置,以及阴影的颜色和尺寸等,需要的朋友可以参考下

效果演示:
How to create a border shadow effect using the box-shadow property of CSS3

box-shadow向框添加一个或多个阴影。IE9+、Firefox 4、Chrome、Opera 以及 Safari 5.1.1 支持 box-shadow 属性。
语法:
代码如下: 

box-shadow: h-shadow v-shadow blur spread color inset;
Copy after login


h-shadow,v-shadow必须。水平,垂直阴影的位置。允许赋值。blur可选,模糊距离。spread可选,阴影的尺寸。color可选,阴影的颜色。inset可选,将外部阴影(outset)改为内部阴影。
来看几个简单的范例:

<body>
 <p class="box">
  <span class="caption">A</span>
 </p>

 <p class="box">
  <span class="caption">B</span>
 </p>

 <p class="box">
  <span class="caption">C</span>
 </p>

 <p class="box">
  <span class="caption">D</span>
 </p>

 <p class="box">
  <span class="caption">E</span>
 </p>

 <p class="box">
  <span class="caption">F</span>
 </p>

 <p class="box">
  <span class="caption">G</span>
 </p>

 <p class="box">
  <span class="caption">H</span>
 </p>
</body>
Copy after login


先将它们简单的设定一下样式:

.box {   
 background-color: #fff;   
 border: 3px solid #ccc;   
 float: left;   
 margin: 20px 40px 0 0;   
 height: 65px;   
 width: 160px;   
 text-align: center;   
}   
.caption {   
 font-size: 20px;   
 position: relative;   
 top: 20px;   
}
Copy after login

接着就一一来练习一下各种参数的使用方式。基本上使用 box-shadow 时最少得要提供 h-shadow 及 v-shadow 两个参数:

.box:nth-child(1) {   
 -webkit-box-shadow: 3px 3px #f3d42e;   
 -moz-box-shadow: 3px 3px #f3d42e;   
 box-shadow: 3px 3px #f3d42e;   
}
Copy after login


若位移距离为正值时就是往右或往下偏移;反之则往左或往上
How to create a border shadow effect using the box-shadow property of CSS3

再加上 5px 的模糊半径:

.box:nth-child(2) {   
 -webkit-box-shadow: 3px 3px 5px #f3d42e;   
 -moz-box-shadow: 3px 3px 5px #f3d42e;   
 box-shadow: 3px 3px 5px #f3d42e;   
}
Copy after login

How to create a border shadow effect using the box-shadow property of CSS3

扩散距离会加强实际的阴影的范围:

.box:nth-child(3) {   
 -webkit-box-shadow: 3px 3px 0 5px #f3d42e;   
 -moz-box-shadow: 3px 3px 0 5px #f3d42e;   
 box-shadow: 3px 3px 0 5px #f3d42e;   
}
Copy after login

位移的距离会在加上扩散距离,所以若值为负的会减少阴影的范围
How to create a border shadow effect using the box-shadow property of CSS3

扩散出来的部份也会套上模糊的效果:

.box:nth-child(4) {   
 -webkit-box-shadow: 3px 3px 5px 5px #f3d42e;   
 -moz-box-shadow: 3px 3px 5px 5px #f3d42e;   
 box-shadow: 3px 3px 5px 5px #f3d42e;   
}
Copy after login


How to create a border shadow effect using the box-shadow property of CSS3

如果没有设定位移距离的话,那么模糊的效果就会直接从区块周围露出:

.box:nth-child(5) {   
 -webkit-box-shadow: 0 0 15px #f3d42e;   
 -moz-box-shadow: 0 0 15px #f3d42e;   
 box-shadow: 0 0 15px #f3d42e;   
}
Copy after login


How to create a border shadow effect using the box-shadow property of CSS3

再加上扩散距离:

.box:nth-child(6) {   
 -webkit-box-shadow: 0 0 15px 5px #f3d42e;   
 -moz-box-shadow: 0 0 15px 5px #f3d42e;   
 box-shadow: 0 0 15px 5px #f3d42e;   
}
Copy after login


How to create a border shadow effect using the box-shadow property of CSS3

另外,若在使用时加上 inset 参数的话,则原本显示在区块外的阴影效果就会变成是内阴影的效果了:

.box:nth-child(7) {   
 -webkit-box-shadow: 3px 3px #f3d42e inset;   
 -moz-box-shadow: 3px 3px #f3d42e inset;   
 box-shadow: 3px 3px #f3d42e inset;   
}
Copy after login


有仔细注意到吗?本来位移距离为正值时就是往右或往下偏移,但因为加上 inset 参数,所以效果就反过来了:
How to create a border shadow effect using the box-shadow property of CSS3

加上模糊半径及扩散距离:

.box:nth-child(8) {   
 -webkit-box-shadow: 3px 3px 5px 5px #f3d42e inset;   
 -moz-box-shadow: 3px 3px 5px 5px #f3d42e inset;   
 box-shadow: 3px 3px 5px 5px #f3d42e inset;   
}
Copy after login


How to create a border shadow effect using the box-shadow property of CSS3

在元素上加了多组阴影设定的话:

.box:nth-child(9) {   
 -webkit-box-shadow: 13px 13px #f3d42e, -10px 10px #33d42e, -5px -10px #ff0d2d, 10px -8px #034d5e;   
 -moz-box-shadow: 13px 13px #f3d42e, -10px 10px #33d42e, -5px -10px #ff0d2d, 10px -8px #034d5e;   
 box-shadow: 13px 13px #f3d42e, -10px 10px #33d42e, -5px -10px #ff0d2d, 10px -8px #034d5e;   
}
Copy after login


阴影的阶层关系是越先设定的阶层会越高~
How to create a border shadow effect using the box-shadow property of CSS3

当熟悉 box-shadow 的用法时,就能很简单又快速的将各种元素加上更有设计感的边框效果唷!

The above is the detailed content of How to create a border shadow effect using the box-shadow property of CSS3. For more information, please follow other related articles on the PHP Chinese website!

Related labels:
source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template
About us Disclaimer Sitemap
php.cn:Public welfare online PHP training,Help PHP learners grow quickly!