CSS3动画按钮

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html

css

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html

css

* {
    margin: 0;
    padding: 0;
  	-moz-box-sizing: border-box;
		-o-box-sizing: border-box;
		-webkit-box-sizing: border-box;
		box-sizing: border-box;
	}

body {
		width: 100%;
		height: 100%;
		font-family: "helvetica neue", helvetica, arial, sans-serif;
		font-size: 13px;
		text-align: center;
		background: #333 url('http://subtlepatterns.subtlepatterns.netdna-cdn.com/patterns/low_contrast_linen.png');
	}

ul {
		margin: 30px auto;
		text-align: center;
	}

li {
		list-style: none;
		position: relative;
		display: inline-block;
		width: 100px;
		height: 100px;
	}

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

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

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

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

.round {
		display: block;
		position: absolute;
		left: 0;
		top: 0;
		width: 100%;
		height: 100%;
		padding-top: 30px;		
		text-decoration: none;		
		text-align: center;
		font-size: 25px;		
		text-shadow: 0 1px 0 rgba(255,255,255,.7);
		letter-spacing: -.065em;
		font-family: "Hammersmith One", sans-serif;		
		-webkit-transition: all .25s ease-in-out;
		-o-transition: all .25s ease-in-out;
		-moz-transition: all .25s ease-in-out;
		transition: all .25s ease-in-out;
		box-shadow: 2px 2px 7px rgba(0,0,0,.2);
		border-radius: 300px;
		z-index: 1;
		border-width: 4px;
		border-style: solid;
	}

.round:hover {
		width: 130%;
		height: 130%;
		left: -15%;
		top: -15%;
		font-size: 33px;
		padding-top: 38px;
		-webkit-box-shadow: 5px 5px 10px rgba(0,0,0,.3);
		-o-box-shadow: 5px 5px 10px rgba(0,0,0,.3);
		-moz-box-shadow: 5px 5px 10px rgba(0,0,0,.3);
		box-shadow: 5px 5px 10px rgba(0,0,0,.3);
		z-index: 2;
		border-size: 10px;
		-webkit-transform: rotate(-360deg);
		-moz-transform: rotate(-360deg);
		-o-transform: rotate(-360deg);
		transform: rotate(-360deg);
	}

a.red {
		background-color: rgba(239,57,50,1);
		color: rgba(133,32,28,1);
		border-color: rgba(133,32,28,.2);
	}

a.red:hover {
		color: rgba(239,57,50,1);
	}

a.green {
		background-color: rgba(1,151,171,1);
		color: rgba(0,63,71,1);
		border-color: rgba(0,63,71,.2);
	}

a.green:hover {
		color: rgba(1,151,171,1);
	}

a.yellow {
		background-color: rgba(252,227,1,1);
		color: rgba(153,38,0,1);
		border-color: rgba(153,38,0,.2);
	}

a.yellow:hover {
		color: rgba(252,227,1,1);
	}

.round span.round {
		display: block;
		opacity: 0;
		-webkit-transition: all .5s ease-in-out;
		-moz-transition: all .5s ease-in-out;
		-o-transition: all .5s ease-in-out;
		transition: all .5s ease-in-out;
		font-size: 1px;
		border: none;
		padding: 40% 20% 0 20%;
		color: #fff;
	}

.round span:hover {
		opacity: .85;
		font-size: 16px;
		-webkit-text-shadow: 0 1px 1px rgba(0,0,0,.5);
		-moz-text-shadow: 0 1px 1px rgba(0,0,0,.5);
		-o-text-shadow: 0 1px 1px rgba(0,0,0,.5);
		text-shadow: 0 1px 1px rgba(0,0,0,.5);	
	}

.green span {
		background: rgba(0,63,71,.7);		
	}

.red span {
		background: rgba(133,32,28,.7);		
	}

.yellow span {
		background: rgba(161,145,0,.7);

}

JavaScript

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