哪里有错呢
<html>
<head>
<title>实心圆</title>
<style>
div{height:50px
width:100px
background:#9da
border-radius:50px 50px 0px 0px}
</style>
</head>
<body>
<div></div>
</body>
</html>
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<html>
<head>
<title>实心圆</title>
<style>
div{height:50px
width:100px
background:#9da
border-radius:50px 50px 0px 0px}
</style>
</head>
<body>
<div></div>
</body>
</html>
2017-11-17
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