<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
</head>
<body>
<!DOCTYPE html>
<html>
<head>
<meta charset=" utf-8">
<meta name="keywords" content="月亮">
<meta name="description" content="简介">
<title>月亮</title>
<style>
.box {
width: 150px;
height: 150px;
background-color: black;
margin: 10px auto;
position: relative;
overflow: hidden;
}
.bb {
width: 150px;
height: 150px;
background-color: white;
position: absolute;
border-radius: 150px;
}
.bbb {
width: 150px;
height: 150px;
background-color: black;
position: absolute;
border-radius: 150px;
left: 30px;
}
</style>
</head>
<body>
<div class="box">
<div class="bb"></div>
<div class="bbb"></div>
</div>
</body>
</html>
</body>
</html>
