DIV+CSS实操一：经管系网页总体模块布局

首先我们先来打开经管系网页，看看网页效果是怎么样的。通过所学Web前端开发的知识，我们一步一步模仿出

标准的网页。我们知道DIV+CSS可以实现网页模块的总体布局，这基本取代了HTML中用table布局，DIV+CSS布局

更加灵活，改写代码方便。

经管系原网页截图：

我先开始做网页的整体模块布局草图：

下面开始编写代码：

第一次HTML代码：

Dreamweaver8

/*第一次添加的代码*/
* {
    margin:0px; 
	padding:0px;
}
body {
    padding:0px; 
	margin:0px; 
	font-size:12px;
}
#top {
	background-image: url(images/head.jpg);
	background-repeat: no-repeat;
	height: 120px;
	width: 998px;
	margin-right: auto;
	margin-left: auto;
}
#nav {
	background-image: url(images/n_nav_bg.gif);
	background-repeat: repeat-x;
	height: 37px;
	width: 998px;
	margin-right: auto;
	margin-left: auto;
}
#adpic {
	background-image: url(images/h4.jpg);
	background-repeat: no-repeat;
	height: 218px;
	width: 998px;
	margin-right: auto;
	margin-left: auto;
}
#news {
	height: 720px;
	width: 998px;
	margin-right: auto;
	margin-left: auto;
}
#link {
	background-image: url(images/n_title_bg.gif);
	background-repeat: repeat-x;
	height: 40px;
	width: 998px;
	margin-right: auto;
	margin-left: auto;
}
#copyright {
	background-color: #E2E2E2;
	height: 80px;
	width: 998px;
	margin-top: 0px;
	margin-right: auto;
	margin-left: auto;
	border-top-width: 5px;/*设置5像素的上边框*/
	border-top-style: solid;
	border-top-color: #006042;
	margin-bottom: 0px;
}
#news #news_left {
	float: left;
	height: 720px;
	width: 233px;
	margin-right: 5px;
}
#news #news_mid {
	float: left;
	height: 720px;
	width: 455px;
	margin-right: 5px;
}
#news #news_right {
	height: 720px;
	width: 300px;
	float: left;
}
#news #news_left #news_left_top {
	height: 248px;
	width: 233px;
	background-color:#FF0000;
}
#news #news_left #news_left_mid {
	height: 240px;
	width: 233px;
	background-color:#00FF00;
}
#news #news_left #news_left_bottom {
	height: 232px;
	width: 233px;
	background-color:#0000FF;
}
#news #news_mid #news_mid_top {
	height: 488px;
	width: 455px;
	background-color:#000000;
}
#news #news_mid #news_mid_bottom {
	height: 232px;
	width: 455px;
	background-color:#999999;
}
#news #news_right #news_right_top {
	height: 248px;
	width: 300px;
	background-color:#FFFF00;
}
#news #news_right #news_right_mid {
	height: 240px;
	width: 300px;
	background-color:#00FFFF;
}
#news #news_right #news_right_bottom {
	height: 232px;
	width: 300px;
	background-color:#FF00FF;
}