html, body, div, span, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
abbr, address, cite, code,
del, dfn, em, img, ins, kbd, q, samp,
small, strong, sub, sup, var,
b, i,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td,
article, aside, canvas, details, figcaption, figure, 
footer, header, hgroup, menu, nav, section, summary,
time, mark, audio, video {
    margin:0;
    padding:0;
}
article,aside,canvas,details,figcaption,figure,
footer,header,hgroup,menu,nav,section,summary,img { 
    display:block;
}
nav ul {
    list-style:none;
}
ul{
  list-style:none; 
}
a{
    text-decoration: none;
}
.container{
    width:1200px;
    height:100%;
    margin:0 auto;
}
.fl{
    float: left;
}
.fr{
    float:right;
}
.clearfix{
    zoom:1;
}
body{font-size: 12px;font-family: "Helvetica Neue",Helvetica,Arial,"Microsoft Yahei","Hiragino Sans GB","Heiti SC","WenQuanYi Micro Hei";
color:#333;}

/* ***********************友情链接 **********************/
.links{
    width: 100%;
    height:100px;
    background: #222;
}
.links ul{
    width:1000px;
    height:100%;
    margin:0 auto;

}
.links ul li{
    padding:0 20px;
    height:100px;
    line-height: 100px;
    float:left;
    text-align: center;
}
.links ul li a{
    font-size: 14px;
    color: #666;
}
.links ul li a:hover{
    color: #1ccecd;
}
/* *****回到顶部 */
#back-to-top{
    width:35px;
    height:35px;
    text-align: center;
    line-height: 35px;
    position: fixed;
    bottom: 15px;
    right:15px;
    opacity: 1;
    cursor: pointer;
    background-color: rgb(28, 206, 205);
    border-radius: 50%;
}
#back-to-top i{
    color:#fff;
    font-size: 25px;
}

/* 头部logo */
header{
    width: 100%;
    height:106px;
    padding-top: 26px;
    border-bottom: 1px solid #d6d6d6;
}
header .logo{
    width:300px;
    height:82px;
    margin:0 auto;
}
header .logo img{
    width:100%;
    height:100%;
}
/* **********************导航************* */
nav{
    width:100%;
    height:92px;

}
nav .container{
    width:1100px;
    padding-left: 100px;
    border-bottom:1px solid #666;

}
nav ul{
    position: relative;
    height:100%;
    
}
nav ul li{
    float: left;
}
nav ul li a{
    display: block;
    text-align: center;
    height:92px;
    font-size: 14px;
    padding:0 27px;
    line-height: 92px;
    color:#5b5b5b;
}
nav ul li.active a{
    color:#18c4c2;
}
nav ul li a:hover{
    color:#18c4c2;
}
nav ul .li_bg{
    height: 4px; 
    background-color: #18c4c2;
    border: none;
    position: absolute; 
    top: 88px;
    z-index: 1; 
    overflow: hidden;
}