body{
    padding-top: 86px;
}
.head{
    height: 86px;
    position: fixed;
    background-color: #fff;
    left: 0;
    right: 0;
    top: 0;
    margin-left: auto;
    margin-right: auto;
    z-index: 9999;
}
.logo{
    position: absolute;
    top: 20px;
    left: 40px;
}
.nav{
    position: absolute;
    right: 0;
    width: 640px;
    top: 32px;
    font-size: 14px;
    color: #666666;
}
.nav>span{
    float: left;
    width: 20%;
    cursor: default ;
}
.img{
    display: block;
    margin: 0 auto;
}

.list{
    margin-top: 20px;
    padding-left: 580px;
    height: 350px;
    position: relative;
    color: #4d4d4d;
}
.list_img{
    position: absolute;
    left: 100px;
    top: 0;
}
.list_title{
    font-size: 16px !important;
    padding-top:102px;
}
.list_tip{
    margin: 20px 0;
    letter-spacing:2px;
}
.list>div{
    font-size: 16px;
}
.list_content{
    width: 450px;
    letter-spacing:4px;
    line-height: 32px;
}