@charset "utf-8";

html { font-size: 62.5%; }



img { width: 100%; }



body, div, dl, dt, dd, ul, ol, li, h1, h2, h3, h4, h5, h6, pre, form, fieldset, input, textarea, p, blockquote, th, td, font { padding: 0; margin: 0; font-family: "微软雅黑", "宋体", Arial, Helvetica, sans-serif; }



table { border-collapse: collapse; border-spacing: 0; width: 100%; }



fieldset, img { border: 0; vertical-align: top; }



h1, h2, h3, h4, h5, h6 { font-weight: normal; font-size: 100%; }



ol, ul, li, dl, dt, dd { list-style: none; }



input, button, textarea, checkbox, select, radio, form { vertical-align: middle; font-size: 100%; }











img {  
    max-width: 100%;  
    height: auto;  
}

.nr_top img {  
    width:100%;  
	
}



.head{
	
	width:100%;
	}
.center{
	
	width:100%;
	}
	
.head_nav ul{ overflow:hidden; }

.head_nav ul li{ float:left; width:20%;margin:1% 1%; }