摘要：css:*{margin: 0px;padding:0px;}li{list-style: none;}a{text-decoration: none;color:#ccc;cursor: pointer;}.clear{clear: both;}/*头部样式*/.header{background: #333;width:100%;height: 40px;}.menu{background:
css:
*{margin: 0px;padding:0px;}
li{list-style: none;}
a{text-decoration: none;color:#ccc;cursor: pointer;}
.clear{clear: both;}
/*头部样式*/
.header{background: #333;width:100%;height: 40px;}
.menu{background: #ccc;width:1226px;height:40px;margin: 0px auto;}
/*主体部分样式*/
.content{width:1226px;margin: 0px auto;}
.contentMenu{background: #ccc;height:90px;margin: 10px auto;}
.contentPic{margin: 10px auto;}
.contentPic_l{width:246px;height:480px;background: #ccc;float:left;}
.contentPic_r{width:980px;height:480px;background: blue;float:left;}
.contentPic_ul{height:180px;margin: 10px auto;}
.contentPic_ul_1{width:235px;background:#5F5750;height:170px;margin-right: 13px;float:left;}
.contentPic_ul_0{width:317px;height:170px;float:left;}
/*小米闪购*/
.contentShop{height:340px;margin: 10px auto;}
.contentShop_1{width:235px; height:340px; background:#ccc; float:left;}
.contentImg{background: #ccc;height:100px;margin: 10px auto;}
.contentUL{background: #ccc;height:80px;margin: 10px auto;}
.contentPhone{background: #ccc;height:500px;margin: 10px auto;}
/*网页底部*/
.footer{background: #ccc;width:1226px;height: 100px;margin: 10px auto;}
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>小米商城</title>
<link rel="shortcut icon" type="image/x-icon" href="static/images/footlogo.png">
<link rel="stylesheet" type="text/css" href="static/font-awesome/css/font-awesome.min.css">
<link rel="stylesheet" type="text/css" href="static/css/style.css">
</head>
<body>
<!--头部-->
<div class="header">
<div class="menu"></div>
</div>
<!--主体部分-->
<div class="contents">
<div class="content">
<div class="contentMenu"></div>
<div class="contentPic">
<div class="contentPic_l"></div>
<div class="contentPic_r"></div>
</div>
<div class="clear"></div>
<div class="contentPic_ul">
<div class="contentPic_ul_1"></div>
<div class="contentPic_ul_0" style="background:url(static/images/midAD1.jpg); margin-right:13px;"></div>
<div class="contentPic_ul_0" style="background:url(static/images/midAD2.jpg); margin-right:13px;"></div>
<div class="contentPic_ul_0" style="background:url(static/images/midAD3.jpg); "></div>
</div>
<!--小米闪购-->
<div class="contentShop">
<h1>小米闪购</h1>
<div class="contentShop_1" style="margin-right: 12.7px; border-top:1px solid #F29C9A;"></div>
<div class="contentShop_1" style="margin-right: 12.7px; border-top:1px solid #FFD589;"></div>
<div class="contentShop_1" style="margin-right: 12.7px; border-top:1px solid #C1E1A6;"></div>
<div class="contentShop_1" style="margin-right: 12.7px; border-top:1px solid #90CAF9;"></div>
<div class="contentShop_1" style="border-top:1px solid #EF9997;"></div>
</div>
<div class="clear"></div>
<div class="contentImg" style="background:url(static/images/longAD1.jpg) "></div>
<div class="contentUL">手机</div>
<div class="contentPhone"></div>
<div class="contentImg" style="background:url(static/images/longAD2.jpg) "></div>
<div class="contentUL">智能</div>
<div class="contentPhone"></div>
<div class="contentImg" style="background:url(static/images/longAD3.jpg) "></div>
<div class="contentUL">家电</div>
<div class="contentPhone"></div>
<div class="contentImg" style="background:url(static/images/longAD4.jpg) "></div>
</div>
</div>
<!--底部-->
<div class="footers">
<div class="footer">网页底部</div>
</div>
</body>
</html>
问题：1.代码太长了，我写作业时能直接像这样黏贴吗？老师说发布工单，可是作业怎么发布呢？2.我和老师用的同样的工具去量小米商城的尺度，可是相差较大，按老师的尺寸写，用尺子量效果和写的也不一样。这是怎么回事呢？
