<style type="text/css">
.div1{
width: 300px;
height: 300px;
border: 3px solid black;
border-radius: 10px;
position: relative;
}
.div1-1{
width: 100px;
height: 100px;
border-radius: 100%;
background: black;
position: absolute;
top: 50%;
left: 50%;
margin-left: -50px;
margin-top: -50px;
}
.div2{
width:300px;
height: 300px;
border:3px solid black;
border-radius:10px;
position: absolute;
}
.div2-1{
width: 100px;
height: 100px;
border-radius: 100%;
background: black;
position: absolute;
top: 50%;
left: 25%;
margin-left: -25px;
margin-top: -45px;
}
.div2-2{
width: 100px;
height: 100px;
border-radius: 100%;
background: black;
position: absolute;
top: 50%;
left: 75%;
margin-top: -50px;
margin-left:-65px;
}
.div1,.div2,{
float: left;
}
</style>
</head>
<body>
<div class="div1">
<div class="div1-1"></div>
</div>
<div class="div2">
<div class="div2-1"></div>
<div class="div2-2"></div>
</div>
</body>
.div1{
width: 300px;
height: 300px;
border: 3px solid black;
border-radius: 10px;
position: relative;
}
.div1-1{
width: 100px;
height: 100px;
border-radius: 100%;
background: black;
position: absolute;
top: 50%;
left: 50%;
margin-left: -50px;
margin-top: -50px;
}
.div2{
width:300px;
height: 300px;
border:3px solid black;
border-radius:10px;
position: absolute;
}
.div2-1{
width: 100px;
height: 100px;
border-radius: 100%;
background: black;
position: absolute;
top: 50%;
left: 25%;
margin-left: -25px;
margin-top: -45px;
}
.div2-2{
width: 100px;
height: 100px;
border-radius: 100%;
background: black;
position: absolute;
top: 50%;
left: 75%;
margin-top: -50px;
margin-left:-65px;
}
.div1,.div2,{
float: left;
}
</style>
</head>
<body>
<div class="div1">
<div class="div1-1"></div>
</div>
<div class="div2">
<div class="div2-1"></div>
<div class="div2-2"></div>
</div>
</body>
2点没有移到1点左边
