求师傅们帮忙看看哪里错了,不出效果
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTG-8" />
<title>无标题文档</title>
<style type="text/css">
/*在此定义相应的类选择器,并根据要求设置相关CSS属性*/
*{
padding:0;
margin:0;
}
.mainBox{
width:960px;
height:300px;
background:#CFF;
margin:0 auto;
overflow:visible;
};
.leftBox{
width:740px;
height:300px;
background:#C9F;
float:left;
};
.rightBox{
width:210px;
height:300px;
background:#FCF;
float:right;
};
.clear{
clear:both;
height:0;
overflow:hidden;
}
</style>
</head>
<body>
<div class="mainBox">
<div class="leftBox">Box1</div>
<div class="rightBox">Box2</div>
<div class="clear"></div>
</div>
</body>
</html>