请问有没有练习题的答案？
有的题不会做，看描述也看不懂，想问问有没有代码答案参考
2 回答
<!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=gb2312" />
<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*/
.mainBox{
width:960px;
background-color:#cff;
overflow:hidden;
}
.leftBox{
float:left;
width:740px;
height:300px;
background-color:#c9f;
}
.rightBox{
width: 210px;
height: 300px;
background-color:#fcf;
float: right;
}
</style>
</head>
<body>
<div class="mainBox">
<!--在此添加相应的div标签-->
<div class="leftBox"></div>
<div class="rightBox"></div>
</div>
</body>
</html>
<!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=gb2312" />
<title>无标题文档</title>
<style type="text/css">
.mainBox{
/*margin:0 auto;*/
width:960px;
height:300px;
background:blue;
}
/*在此定义相应的类选择器，并根据要求设置相关CSS属性*/
.leftBox{
width:740px;
height:300px;
background: red;
float:left
}
.rightBox{
width:210px;
height:300px;
background: yellow;
float:right;
}
</style>
</head>
<body>
<div class="mainBox">
<div class="leftBox"></div>
<div class="rightBox"></div>
</div>
</body>
</html>
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