W3C教程 -- 提供最全面、最权威的编程技术基础教程。

开孔式

我们可以給图像加上内阴影的效果，让它看上像陷进去一样。

CSS

.cut-out .image-wrap {
	-webkit-box-shadow: 0 1px 0 rgba(255,255,255,.2), inset 0 4px 5px rgba(0,0,0,.6), inset 0 1px 0 rgba(0,0,0,.6);
	-moz-box-shadow: 0 1px 0 rgba(255,255,255,.2), inset 0 4px 5px rgba(0,0,0,.6), inset 0 1px 0 rgba(0,0,0,.6);
	box-shadow: 0 1px 0 rgba(255,255,255,.2), inset 0 4px 5px rgba(0,0,0,.6), inset 0 1px 0 rgba(0,0,0,.6);
	-webkit-border-radius: 20px;
	-moz-border-radius: 20px;
	border-radius: 20px;
}

变形与发光

这个例子里，我们给图形添加一个过渡动画，当鼠标悬浮在图形上的时候，它会过渡成一个圆形的内发光效果。

CSS

.morphing-glowing .image-wrap {
 -webkit-transition: 1s;
 -moz-transition: 1s;
 transition: 1s;
 -webkit-border-radius: 20px;
 -moz-border-radius: 20px;
 border-radius: 20px;
}
.morphing-glowing .image-wrap:hover {
 -webkit-box-shadow: 0 0 20px rgba(255,255,255,.6), inset 0 0 20px rgba(255,255,255,1);
 -moz-box-shadow: 0 0 20px rgba(255,255,255,.6), inset 0 0 20px rgba(255,255,255,1);
 box-shadow: 0 0 20px rgba(255,255,255,.6), inset 0 0 20px rgba(255,255,255,1);
 -webkit-border-radius: 60em;
 -moz-border-radius: 60em;
 border-radius: 60em;
}

光滑层

我们给图形加上一个高光的效果，有点类似IOS的图标。

CSS

.glossy .image-wrap {
 -webkit-box-shadow: inset 0 -1px 0 rgba(0,0,0,.5);
 -moz-box-shadow: inset 0 -1px 0 rgba(0,0,0,.5);
 box-shadow: inset 0 -1px 0 rgba(0,0,0,.5);
 -webkit-border-radius: 20px;
 -moz-border-radius: 20px;
 border-radius: 20px;
}
.glossy .image-wrap:after {
 position: absolute;
 content: ' ';
 width: 100%;
 height: 50%;
 top: 0;
 left: 0;
 -webkit-border-radius: 20px;
 -moz-border-radius: 20px;
 border-radius: 20px;
 background: -moz-linear-gradient(top, rgba(255,255,255,0.7) 0%, rgba(255,255,255,.1) 100%);
 background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,rgba(255,255,255,0.7)), color-stop(100%,rgba(255,255,255,.1)));
 background: linear-gradient(top, rgba(255,255,255,0.7) 0%,rgba(255,255,255,.1) 100%);
}

反射

也可以给图形加上倒影效果，让它看上去像摆在地上一样。

CSS

.reflection .image-wrap:after {
	 position: absolute;
	 content: ' ';
	 width: 100%;
	 height: 30px;
	 bottom: -31px;
	 left: 0;
	 -webkit-border-top-left-radius: 20px;
	 -webkit-border-top-right-radius: 20px;
	 -moz-border-radius-topleft: 20px;
	 -moz-border-radius-topright: 20px;
	 border-top-left-radius: 20px;
	 border-top-right-radius: 20px;
	 background: -moz-linear-gradient(top, rgba(0,0,0,.3) 0%, rgba(255,255,255,0) 100%);
	 background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,rgba(0,0,0,.3)), color-stop(100%,rgba(255,255,255,0)));
	 background: linear-gradient(top, rgba(0,0,0,.3) 0%,rgba(255,255,255,0) 100%);
}
.reflection .image-wrap:hover {
	 position: relative;
	 top: -8px;
}

光泽和反射

把前两部合并起来，我们得到了这样的效果

CSS

.glossy-reflection .image-wrap {
	 -webkit-box-shadow: inset 0 -1px 0 rgba(0,0,0,.5), inset 0 1px 0 rgba(255,255,255,.6);
	 -moz-box-shadow: inset 0 -1px 0 rgba(0,0,0,.5), inset 0 1px 0 rgba(255,255,255,.6);
	 box-shadow: inset 0 -1px 0 rgba(0,0,0,.5), inset 0 1px 0 rgba(255,255,255,.6);
	 -webkit-transition: 1s;
	 -moz-transition: 1s;
	 transition: 1s;
	 -webkit-border-radius: 20px;
	 -moz-border-radius: 20px;
	 border-radius: 20px;
}
.glossy-reflection .image-wrap:before {
	 position: absolute;
	 content: ' ';
	 width: 100%;
	 height: 50%;
	 top: 0;
	 left: 0;
	 -webkit-border-radius: 20px;
	 -moz-border-radius: 20px;
	 border-radius: 20px;
	 background: -moz-linear-gradient(top, rgba(255,255,255,0.7) 0%, rgba(255,255,255,.1) 100%);
	 background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,rgba(255,255,255,0.7)), color-stop(100%,rgba(255,255,255,.1)));
	 background: linear-gradient(top, rgba(255,255,255,0.7) 0%,rgba(255,255,255,.1) 100%);
}
.glossy-reflection .image-wrap:after {
	 position: absolute;
	 content: ' ';
	 width: 100%;
	 height: 30px;
	 bottom: -31px;
	 left: 0;
	 -webkit-border-top-left-radius: 20px;
	 -webkit-border-top-right-radius: 20px;
	 -moz-border-radius-topleft: 20px;
	 -moz-border-radius-topright: 20px;
	 border-top-left-radius: 20px;
	 border-top-right-radius: 20px;
	 background: -moz-linear-gradient(top, rgba(230,230,230,.3) 0%, rgba(230,230,230,0) 100%);
	 background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,rgba(230,230,230,.3)), color-stop(100%,rgba(230,230,230,0)));
	 background: linear-gradient(top, rgba(230,230,230,.3) 0%,rgba(230,230,230,0) 100%);
}

带式

我们给图形添加了一个层，有点像一个胶带贴在上面

CSS

.tape .image-wrap {
	 -webkit-box-shadow: inset 0 0 2px rgba(0,0,0,.7), inset 0 2px 0 rgba(255,255,255,.3), inset 0 -1px 0 rgba(0,0,0,.5), 0 1px 3px rgba(0,0,0,.4);
	 -moz-box-shadow: inset 0 0 2px rgba(0,0,0,.7), inset 0 2px 0 rgba(255,255,255,.3), inset 0 -1px 0 rgba(0,0,0,.5), 0 1px 3px rgba(0,0,0,.4);
	 box-shadow: inset 0 0 2px rgba(0,0,0,.7), inset 0 2px 0 rgba(255,255,255,.3), inset 0 -1px 0 rgba(0,0,0,.5), 0 1px 3px rgba(0,0,0,.4);
}
.tape .image-wrap:after {
	 position: absolute;
	 content: ' ';
	 width: 60px;
	 height: 25px;
	 top: -10px;
	 left: 50%;
	 margin-left: -30px;
	 border: solid 1px rgba(137,130,48,.2);
	 background: -moz-linear-gradient(top, rgba(254,243,127,.6) 0%, rgba(240,224,54,.6) 100%);
	 background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,rgba(254,243,127,.6)), color-stop(100%,rgba(240,224,54,.6)));
	 background: linear-gradient(top, rgba(254,243,127,.6) 0%,rgba(240,224,54,.6) 100%);
	 -webkit-box-shadow: inset 0 1px 0 rgba(255,255,255,.3), 0 1px 0 rgba(0,0,0,.2);
}

变形与染色

鼠标悬浮上去，看看它有什么变化？

CSS

.morphing-tinting .image-wrap {
	 position: relative;
	 -webkit-transition: 1s;
	 -moz-transition: 1s;
	 transition: 1s;
	 -webkit-border-radius: 20px;
	 -moz-border-radius: 20px;
	 border-radius: 20px;
}
.morphing-tinting .image-wrap:hover {
	 -webkit-border-radius: 30em;
	 -moz-border-radius: 30em;
	 border-radius: 30em;
}
.morphing-tinting .image-wrap:after {
	 position: absolute;
	 content: ' ';
	 width: 100%;
	 height: 100%;
	 top: 0;
	 left: 0;
	 -webkit-transition: 1s;
	 -moz-transition: 1s;
	 transition: 1s;
	 -webkit-border-radius: 30em;
	 -moz-border-radius: 30em;
	 border-radius: 30em;
}
.morphing-tinting .image-wrap:hover:after {
	 background: -webkit-gradient(radial, 50% 50%, 40, 50% 50%, 80, from(rgba(0,0,0,0)), to(rgba(0,0,0,1)));
	 background: -moz-radial-gradient(50% 50%, circle, rgba(0,0,0,0) 40px, rgba(0,0,0,1) 80px);
}

羽毛边圈

我们再来看一下CSS实现羽化的效果。

CSS

.feather .image-wrap {
	 position: relative;
	 -webkit-border-radius: 30em;
	 -moz-border-radius: 30em;
	 border-radius: 30em;
}
.feather .image-wrap:after {
	 position: absolute;
	 content: ' ';
	 width: 100%;
	 height: 100%;
	 top: 0;
	 left: 0;
	 background: -webkit-gradient(radial, 50% 50%, 50, 50% 50%, 70, from(rgba(255,255,255,0)), to(rgba(255,255,255,1)));
	 background: -moz-radial-gradient(50% 50%, circle, rgba(255,255,255,0) 50px, rgba(255,255,255,1) 70px);
}

一点CSS小技巧

使用CSS伪类:after，相当于创建一个独立的层遮挡在图像上面，同样可以得到不错的效果。

CSS

.image-wrap {
	 position: relative;
	 display: inline-block;
	 max-width: 100%;
	 vertical-align: bottom;
}
.image-wrap:after {
	 content: ' ';
	 width: 100%;
	 height: 100%;
	 position: absolute;
	 top: -1px;
	 left: -1px;
	 border: solid 1px #1b1b1b;
	 -wekbit-box-shadow: inset 0 0 1px rgba(255,255,255,.4), inset 0 1px 0 rgba(255,255,255,.4), 0 1px 2px rgba(0,0,0,.3);
	 -moz-box-shadow: inset 0 0 1px rgba(255,255,255,.4), inset 0 1px 0 rgba(255,255,255,.4), 0 1px 2px rgba(0,0,0,.3);
	 box-shadow: inset 0 0 1px rgba(255,255,255,.4), inset 0 1px 0 rgba(255,255,255,.4), 0 1px 2px rgba(0,0,0,.3);
	 -webkit-border-radius: 7px;
	 -moz-border-radius: 7px;
	 border-radius: 7px;
}
.image-wrap img {
	 vertical-align: bottom;
	 -webkit-box-shadow: 0 1px 2px rgba(0,0,0,.4);
	 -moz-box-shadow: 0 1px 2px rgba(0,0,0,.4);
	 box-shadow: 0 1px 2px rgba(0,0,0,.4);
	 -webkit-border-radius: 6px;
	 -moz-border-radius: 6px;
	 border-radius: 6px;
}

浏览器功能

上述例子在支持CSS3的浏览器上可以显示出非常棒的效果，不支持CSS3的浏览器上就啥效果也看不到了。

来源：http://www.vqianduan.com/984.html