.div1 {
width:100px
height:100px
background-color:transparent
border:4px solid red
border-radius:60px
margin-top:20px
}
.div2 {
width:60px
height:60px
background-color:#fff
z-index:1
border-radius:45px
position:absolute
top:0
left:80px
}
还有一个是用HTML5的canvas标签，不过得用JS
<html><head>
<title></title>
<style type="text/css">
.content{display: none}
</style>
</head>
<body>
<span>设为终点</span><span>设为起点</span><span>搜索附近</span>
<div class="content">1</div>
<div class="content">2</div>
<div class="content">3</div>
<script>
var _span=document.getElementsByTagName("span")
var _div=document.getElementsByTagName("div")
for (var i = 0,len=_span.lengthi <leni++) {
_span[i].index=_div[i].index=i
_span[i].onclick=function(){
var ind=this.index
if (_div[ind].className=="content") {
for(var j=0j<lenj++){
_div[j].className="content"
}
_div[ind].className=""
}else{
_div[ind].className="content"
}
}
}
</script>
</body>
</html>
