css 呼吸燈效果

DIV

<div class="mapdaohang">
	<a href="https://surl.amap.com/7d9OsE1faeQ">
		<i class="iconfont icon-map"></i>
	</a>
</div>
           

CSS 引用 iconfont

<link rel="stylesheet" href="//at.alicdn.com/t/font_1876690_xdmjsxzdn2k.css" target="_blank" rel="external nofollow" >

CSS

.mapdaohang{
	position: fixed;
	bottom: 4vh;
	right: 5vw;
	z-index: 999;
	border-radius: 100%;
	box-shadow:0 1px 2px rgba(0,0,0,.3);
	width: 40px;
	text-align: center;
	height: 40px;
	line-height: 40px;
	overflow:hidden;
    /*padding:0.5rem;*/
    background: rgba(0, 0, 0, 0.8);
    box-sizing: border-box;
    -webkit-animation-timing-function:ease-in-out;
	-webkit-animation-name:breathe;
	animation-duration:2000ms;
	-webkit-animation-duration:2000ms;
	-webkit-animation-iteration-count:infinite;
	-webkit-animation-direction:alternate;
}
.mapdaohang .iconfont{
	font-size: 22px;
	color: #fff;
}

@-webkit-keyframes breathe {
	0% {
		border:1px solid rgba(59,235,235,1);
		box-shadow:0 1px 2px rgba(255,255,255,0.1);
	}
	100% {
		border:1px solid rgba(59,235,235,1);
		box-shadow:0 1px 30px rgba(59,255,255,1);
	}
}