css3时钟

本实例纯css3打造，因为没有获取当前时间，所以初始化时间为12点，打开即开始走动。圆盘使用border-radius做成，然后一个:before生成中间的圆点，一个:after生成倒影。至于三个指针就是关键了，其高度及宽度不等，绝对定位于中间的同一圆点，然后以这点为坐标旋转，旋转使用动画一样，只是旋转一周的持续时间不一样，秒针为60s，分针为3600s，时钟为43200s。

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css主要代码：

#clock {
	position: relative;
	width: 120px;
	height: 120px;
	background: #96d2d0;
	margin: 50px auto 0;
	border: 10px solid #fff;
	
	-moz-border-radius: 50%;
	-webkit-border-radius: 50%;
	border-radius: 50%;
}

#clock:after {
	content: '';
	position: absolute;
	bottom: -7px;
	width: 120px;
	left: 0;
	height: 0px;
	
	-moz-border-radius: 50%;
	-webkit-border-radius: 50%;
	border-radius: 50%;
	
	-webkit-box-shadow: 0px 0px 2px 2px rgba(0,0,0,0.8);
	-moz-box-shadow: 0px 0px 8px 2px rgba(0,0,0,0.8);
	box-shadow: 0px 0px 8px 2px rgba(0,0,0,0.8);
	
	z-index: -1;
}

#clock:before {
	content: '';
	position: absolute;
	z-index: 2;
	width: 8px;
	height: 8px;
	background: #333;
	left: 50%;
	top: 50%;
	margin: -4px 0 0 -4px;
	
	-moz-border-radius: 50%;
	-webkit-border-radius: 50%;
	border-radius: 50%;
}

/* Hands */
#clock span.hand {
	background: #555;
	position: absolute;
	left: 50%;
	-webkit-animation: rotate 60s infinite linear;
	-webkit-transform-origin: left bottom;
	-moz-animation: rotate 60s infinite linear;
	-moz-transform-origin: left bottom;
	-ms-animation: rotate 60s infinite linear;
	-ms-transform-origin: left bottom;
	-o-animation: rotate 60s infinite linear;
	-o-transform-origin: left bottom;
	animation: rotate 60s infinite linear;
	transform-origin: left bottom;
}

#clock span.hand.second {
	height: 50px;
	width: 2px;	
	margin-left: -1px;
	top: 10px;
}

#clock span.hand.minute {
	height: 40px;
	width: 4px;	
	margin-left: -2px;
	top: 20px;
	-webkit-animation-duration: 3600s;
	-moz-animation-duration: 3600s;
	-ms-animation-duration: 3600s;
	-o-animation-duration: 3600s;
	animation-duration: 3600s;
}

#clock span.hand.hour {
	height: 30px;
	width: 6px;	
	margin-left: -3px;
	top: 30px;
	-webkit-animation-duration: 43200s;
	-moz-animation-duration: 43200s;
	-ms-animation-duration: 43200s;
	-o-animation-duration: 43200s;
	animation-duration: 43200s;
}

@-webkit-keyframes rotate {
	0% { -webkit-transform: rotate(0deg);}
	100% { -webkit-transform: rotate(360deg);}
}	

@-moz-keyframes rotate {
	0% { -moz-transform: rotate(0deg);}
	100% { -moz-transform: rotate(360deg);}
}	

@-ms-keyframes rotate {
	0% { -ms-transform: rotate(0deg);}
	100% { -ms-transform: rotate(360deg);}
}	

@-o-keyframes rotate {
	0% { -o-transform: rotate(0deg);}
	100% { -o-transform: rotate(360deg);}
}	

@keyframes rotate {
	0% { transform: rotate(0deg);}
	100% { transform: rotate(360deg);}
}	

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查看更多：http://cssdeck.com/labs/non-functional-pure-css3-animated-clock

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