.header_box{
    height:60px;
    width:100%;
    position: fixed;
    top:0;
    left:0;
    background-color:rgba(255,255,255,.9);
    -webkit-transition: .5s all ;
    -moz-transition: .5s all ;
    -ms-transition: .5s all ;
    -o-transition: .5s all ;
    transition: .5s all;
    z-index:222;
}
.height60{
    height:60px;
    width:100%;
}
.header_box:hover{
    background-color:rgba(255,255,255,1);
    /*opacity:0.4*/
}
.header_centent{
    width:960px;
    height:60px;
    margin:0 auto;

    overflow: hidden;
}
.header_ul li a:hover{
    color:#f44336;
}
.Logo-img{
    margin:10px 0 0 0;
}
.header_ul{
    float: right;
}
.header_ul li{
    float: left;
    line-height: 60px;
    padding:0 30px 0 0;
}
.header_ul li:nth-last-of-type(1){
    padding:0 0px 0 0;
}
.header_ul li a{
    color:#3a434d;
    font-size:16px;
}
.header_ul li a.active{color:#f44336;}