DIV+CSS实操四：经管系网页内容模块内容添加(上)_html/css_WEB-ITnose

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/*第一次添加网页总体布局的代码*/* { 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;}#news #news_left #news_left_mid {	height: 240px;	width: 233px;}#news #news_left #news_left_bottom {	height: 232px;	width: 233px;}#news #news_mid #news_mid_top {	height: 488px;	width: 455px;}#news #news_mid #news_mid_bottom {	height: 232px;	width: 455px;}#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;}/*第二次添加导航栏和友情链接栏的代码，下拉菜单我们后面做*/a:link { /*伪类选择页面中全部的超链接标签的未访问的链接状态*/ color:#000000; 	text-decoration:none;}a:visited { /*伪类选择页面中全部的超链接标签的已访问的链接状态*/ color:#000000; 	text-decoration:none;}a:hover{ /*伪类选择页面中全部的超链接标签的鼠标悬停的状态*/	color:#FF0000;	text-decoration:none;	font-weight: bold;	}#nav li {/*后代选择器选择div中行内元素li的设置*/	float: left;	line-height: 37px;	list-style-type:none;	text-align:center;	}#link #link_left {	font-family: "微软雅黑";	font-size: 14px;	line-height: 32px;	font-weight: bold;	color: #009966;	float: left;	height: 32px;	width: 80px;	padding-left: 10px;}#link #link_right {	line-height: 32px;	float: left;	height: 32px;	width: 908px;}#nav a:link{/*后代选择器选择div中行内选择a设置未访问的链接状态*/	color:#FFFFFF;	text-decoration:none;	font-family: "微软雅黑";	font-size: 14px;	font-weight: bold;	width:89px;	height:37px;	display:block;}#nav a:visited{/*后代选择器选择div中行内选择a设置已访问的链接状态*/	color:#FFFFFF;	text-decoration:none;	font-family: "微软雅黑";	font-size: 14px;	font-weight: bold;	width:89px;	height:37px;	display:block;}#nav a:hover{/*后代选择器选择div中行内选择a设置鼠标悬浮在链接的的状态*/	color:#FFFFFF;	text-decoration:none;	font-family: "微软雅黑";	font-size: 14px;	font-weight: bold;	background-color: #009966;	width:89px;	height:37px;	display:block;}/*第三次添加内容标题栏的代码*/img { /*消除图片的默认格式*/ border:none;}.news_left_titlebar {	background-repeat: no-repeat;	height: 31px;	width: 233px;	border-bottom-width: 1px;	border-bottom-style: dashed;	border-bottom-color: #CCCCCC;	background-color: #FFFFFF;	font-size: 14px;	line-height: 32px;	font-weight: bold;	color: #009966;}.news_left_titlebar img {/*设置图片的格式*/	float: left;	height: 14px;	width: 14px;	margin-top: 9px;	margin-right:5px;}.news_mid_titlebar {	background-image: url(images/n_title_bg.gif);	background-repeat: repeat-x;	height: 32px;	width: 445px;	font-size: 14px;	line-height: 32px;	font-weight: bold;	color: #009966;	padding-left: 10px;}.news_right_titlebar {	background-image: url(images/n_title_bg.gif);	background-repeat: repeat-x;	height: 32px;	width: 290px;	font-size: 14px;	line-height: 32px;	font-weight: bold;	color: #009966;	padding-left: 10px;}#copyright #copyright_top {	height: 20px;	width: 998px;	text-align:center;	line-height:20px;	padding-top:20px;}#copyright #copyright_bottom {	height: 20px;	width: 998px;	text-align:center;	line-height:20px;	padding-bottom:20px;}/*第四次代码左半部分内容的添加*/#news #news_left #news_left_top #news_left_top_content {	height: 210px;	width: 233px;	overflow: hidden;	padding-top:3px;	padding-bottom:3px;}#news #news_left #news_left_top #news_left_top_content li {	float: left;	height: 30px;	width: 233px; display:block;}#news #news_left #news_left_top #news_left_top_content a:link{	color:#999999;	font-family: "微软雅黑";	font-size: 14px;	font-weight: bold;	width:233px;	height:30px;	display:block; text-align:left;	vertical-align:middle;}#news #news_left #news_left_top #news_left_top_content a:visited{	color:#999999;	font-family: "微软雅黑";	font-size: 14px;	font-weight: bold;	width:233px;	height:30px;	display:block; text-align:left;	vertical-align:middle;}#news #news_left #news_left_top #news_left_top_content a:hover{	color:#FFFFFF;	font-family: "微软雅黑";	font-size: 14px;	font-weight: bold;	background-color: #009966;	width:233px;	height:30px;	display:block; text-align:left;	vertical-align:middle;}#news #news_left #news_left_mid #news_left_mid_content {	height: 196px;	width: 200px;	overflow: hidden;	padding-top:6px;	padding-bottom:6px;	padding-left:13px;	padding-right:20px;}#news #news_left #news_left_mid #news_left_mid_content a:link{	color:#999999;	font-family: "微软雅黑";	font-size: 14px;	font-weight: bold;	width:100px;	height:28px;	display:block;	text-align:center;	vertical-align:middle;}#news #news_left #news_left_mid #news_left_mid_content a:visited{	color:#999999;	font-family: "微软雅黑";	font-size: 14px;	font-weight: bold;	width:100px;	height:28px;	display:block;	text-align:center;	vertical-align:middle;}#news #news_left #news_left_mid #news_left_mid_content a:hover{	color:#FFFFFF;	font-family: "微软雅黑";	font-size: 14px;	font-weight: bold;	background-color: #009966;	width:100px;	height:28px;	display:block;	text-align:center;	vertical-align:middle;}