*{ margin:0px; padding:0px;}
body 
{
    line-height:1.5;
    font-family:微软雅黑;
}
a{ text-decoration:none;}
ul,li{ list-style:none; } 
.heard-con{ 
    width: 1200px;
    margin: 0 auto;  
} 
.headr-nav li{
    float: left;
    width: 90px;
    height: 50px;
    line-height: 50px;
    text-align: center;
    margin-left: 20px;
    font-size: 16px;
    margin-top: 25px;
}
.headr-nav li a{
    color: #222222;
}
.sptopfoot {
    clear: both;
    background:#ffffff;
    height: 2px;
    position: relative;
}
.spbottom {
    background:#4AB344;
    height: 2px;
    width:90px;
    position: absolute;
    top: 0;
    left: 20px;
    overflow: hidden;
    transition: all 1s;
}