直接附上最终效果图：
index.html内容：
<html>
<!--20170730 soulsjie-->
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>div+css页面布局综合练习</title>
<link rel="stylesheet" href="style.css" type="text/css" />
<!--css文件的引用-->
</head>
<body>
<!--logo开始-->
<div class="logo">logo位</div>
<!--logo结束-->
<!--导航栏开始-->
<div class="jianxi1"></div>
<div class="Navigation">导航栏位</div>
<!--导航栏结束-->
<div class="jianxi2"></div>
<!--内容开始-->
<div class="content">
<!--第一版块开始-->
<div class="contentone">
<!--栏目一开始-->
<div class="lanmuyi">
<div class="lanmuheadyi">
<div class="lanmunameyi"><span class="nameyi">栏目一</span></div><!--栏目名-->
<div class="lanmumoeryi"><span class="moreyi">更多...</span></div><!--更多-->
</div><!--栏目头部-->
<div class="lanmucontent"></div><!--栏目内容-->
</div>
<!--栏目一结束-->
<!--栏目二开始-->
<div class="lanmuer">
<div class="lanmuheader">
<div class="lanmunameer"><span class="nameer">栏目二</span></div><!--栏目名-->
<div class="lanmumoerer"><span class="moreer">更多...</span></div><!--更多-->
</div><!--栏目头部-->
</div>
<!--栏目二结束-->
<!--栏目三开始-->
<div class="lanmusan">
<div class="lanmuheadsan">
<div class="lanmunameyi"><span class="nameyi">栏目三</span></div><!--栏目名-->
<div class="lanmumoeryi"><span class="moreyi">更多...</span></div><!--更多-->
</div><!--栏目头部-->
<div class="lanmucontent"></div><!--栏目内容-->
</div>
<!--栏目三结束-->
</div>
<!--第一版块结束-->
<div class="jianxi3"></div>
<!--第二版块开始-->
<div class="contenttwo">
<!--栏目四开始-->
<div class="lanmusi">
<div class="lanmuheadsi">
<div class="lanmunamesi"><span class="namesi">栏目四</span></div><!--栏目名-->
<div class="lanmumoersi"><span class="moresi">更多...</span></div><!--更多-->
</div><!--栏目头部-->
<div class="lanmucontent"></div><!--栏目内容-->
</div>
<!--栏目四结束-->
<!--栏目五开始-->
<div class="lanmuwu">
<div class="lanmuheadwu">
<div class="lanmunamewu"><span class="namewu">栏目五</span></div><!--栏目名-->
<div class="lanmumoerwu"><span class="morewu">更多...</span></div><!--更多-->
</div><!--栏目头部-->
<div class="lanmucontent"></div><!--栏目内容-->
</div>
<!--栏目五结束-->
</div>
<!--第二版块结束-->
</div>
<!--内容结束-->
<!--底部开始-->
<div class="footer">底部内容</div>
<!--底部结束-->
</body>
</html>
style.css内容：
body{margin:0; padding:0}
/*logo*/
.logo{ background:#FF0000; margin:0 auto; 960px; height:300px}
/*导航栏*/
.Navigation{ background:#990000; 960px; height:30px; margin:0 auto}
/*内容*/
.content{ background:#ffffff; 960px; height:635px; margin:0 auto}
/*第一版块*/
.contentone{ background:#ffffff; 960px; height:300px; margin:0 auto}
/*栏目一*/
.lanmuyi{ background:#ffffff; 250px; height:300px; float:left;border:2px solid #ff0000; margin:0 20 0 0}
.lanmuheadyi{ background:#FF0000; 250px;height:30px}
.lanmunameyi{ 135px;height:30px; float:left}
.lanmumoreyi{ 135px;height:30px; float:right;}
.nameyi{ text-align:left; color:#ffffff; font-size:14px; margin:0 0 0 10}
.moreyi{ text-align:right; color:#ffffff; font-size:14px; margin:0 0 0 60}
/*栏目二*/
.lanmuer{ background:#fff; 408px; height:300px; float:left;border:2px solid #FF6600; margin:0 20 0 0}
.lanmuheader{ background:#FF6600; 408px;height:30px}
.lanmunameer{ 180px;height:30px; float:left}
.lanmumoreer{ 180px;height:30px; float:right;}
.nameer{ text-align:left; color:#fff; font-size:14px; margin:0 0 0 10}
.moreer{ text-align:right; color:#fff; font-size:14px; margin:0 0 0 170}
/*栏目三*/
.lanmusan{ background:#ffffff; 250px; height:300px; float:right;border:2px solid #ff3300; margin:0 0 0 0}
.lanmuheadsan{ background:#ff3300; 250px;height:30px}
/*第二版块*/
.contenttwo{ background:#ffffff; 960px; height:300px; margin:0 auto}
/*栏目四*/
.lanmusi{ background:#fff; 466px; height:300px; float:left;border:2px solid #FF9900; margin:0 20 0 0}
.lanmuheadsi{ background:#FF9900; 466px;height:30px}
.lanmunamesi{ 240px;height:30px; float:left}
.lanmumoresi{ 240px;height:30px; float:right;}
.namesi{ text-align:left; color:#ffffff; font-size:14px; margin:0 0 0 10}
.moresi{ text-align:right; color:#ffffff; font-size:14px; margin:0 0 0 170}
/*栏目五*/
.lanmuwu{ background:#fff; 466px; height:300px; float:left;border:2px solid #FFCC00; margin:0 0 0 0}
.lanmuheadwu{ background:#FFCC00; 466px;height:30px}
.lanmunamewu{ 240px;height:30px; float:left}
.lanmumorewu{ 240px;height:30px; float:right;}
.namewu{ text-align:left; color:#ffffff; font-size:14px; margin:0 0 0 10}
.morewu{ text-align:right; color:#ffffff; font-size:14px; margin:0 0 0 170}
/*底部*/
.footer{ background:#990000; 960px; height:80px; margin:0 auto}
/*间隙*/
.jianxi1{ background:#ffffff; height:5px; margin:0 auto}
.jianxi2{ background:#ffffff; height:10px; margin:0 auto}
.jianxi3{ background:#ffffff; height:20px; margin:0 auto}
