如何使得盒子1位于邊界的中心啊
TYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>填充</title>
<style type="text/css">
#box1{
? ? width:100px;
? ? height:100px;
? ? padding:10px;
? ? border:1px solid red;
}
</style>
</head>
<body>
<div id="box1">盒子1</div>
</body>
</html>
2016-03-08
div{text-align:center;}
2016-03-08
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>填充</title>
<style type="text/css">
#box1{
? ? width:100px;
? ? height:100px;
? ? padding:10px;
? ? border:1px solid red;
? ? text-align:center;
}
span{
? ? display:block;
? ? margin-top:40px;
}
</style>
</head>
<body>
<div id="box1"><span>盒子1</span></div>
</body>
</html>
2016-03-08
text-align:center;
2016-03-08
center
2016-03-08
text-align:center;