<html>
<head>
<style>
.one{
300px;
height:300px;
background:red;
margin:0 auto;
margin-top:200px;
}
.two{
275px;
height:275px;
background:black;
}
.three{
250px;
height:250px;
background:yellow;
}
.four{
225px;
height:225px;
background:green;
}
.five{
200px;
height:200px;
background:blue;
}
.six{
175px;
height:175px;
background:#333333;
}
.seven{
150px;
height:150px;
background:#00FF00;
}
.eight{
125px;
height:125px;
background:#1E90FF;
}
.nine{
100px;
height:100px;
background:#48D1CC;
}
.ten{
75px;
height:75px;
background:#8B0000;
}
.Q{
50px;
height:50px;
background:#FF34B3;
}
.W{
25px;
height:25px;
background:#CD00CD;
}
</style>
</head>
<body>
<div class="one">
<div class="two">
<div class="three">
<div class="four">
<div class="five">
<div class="six">
<div class="seven">
<div class="eight">
<div class="nine">
<div class="ten">
<div class="Q">
<div class="W"></div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</body>
</html>
步骤挺简单 效果挺好看的