html文件

css文件

*{
	margin:0px ;
	padding: 0px;
}
#top{
	width: 100%;
	height: 50px;
	background-color:#000000 ;
}
#top_nav{
	width: 75%;
	height: 50px;
	margin: 0px auto;
	background-color:#004488 ;
}
#body{
	margin: 10px auto;
	width: 75%;
	height: 1500px;
	background-color: #00FF77;
}
#body_image{
	margin: 0px;
	width: 100%;
	height: 400px;
	background-color:#FF0000;
}
#body_content{
	margin: 0px;
	width: 100%;
	height: 1100px;
	background-color: antiquewhite;
}
#body_no{
	margin: 0px;
	width: 100%;
	height: 50px;
	background-color:blue;
}
#body_c{
	margin: 0px;
	width: 100%;
	height: 1050px;
	background-color:#00FF77;
}
#footing{
	margin: 0px auto;
	height: 300px;
	width: 75%;
	background-color: brown;
}
#footing_d{
	margin: 0px;
	height: 230px;
	width: 100%;
	background-color: chartreuse;
}
#footing_nav{
	margin: 0px;
	height: 70px;
	width: 100%;
	background-color: black;
}

效果图