.head_box {
    position: fixed;
    height: 15%;
    width: 100%;
    background-color: white;
    z-index: 99;
}

.head_content {
    width: 80%;
    height: 100%;
    margin: auto;
}

.head_logo {
    width: 10%;
    height: 100%;
}

.head_logo > img {
    position: relative;
    top: 15%;
    width: auto;
    height: 70%;
}

.head_logo_text {
    width: 18%;
    height: 100%;
}

.head_logo_text > span {
    display: inline-block;
    vertical-align: middle;
    font-weight: bold;
    color: #19a5e0;
}

.head_nav {
    position: relative;
    width: 70%;
    height: 100%;
}

.head_ul {
    width: 100%;
    height: 18px;
    display: inline-block;
    vertical-align: middle;
}

/*>: 下一级里的元素*/
.head_ul > li {
    width: 16%;
    height: 100%;
    float: left;
}

.head_ul > li > a {
    float: left;
    width: 100%;
    height: 100%;
    text-align: center;
}

.head_ul > li > a div {
    /*display: inline-block;*/
    /*vertical-align: middle;*/
    width: auto;
    height: 100%;
    overflow: hidden;
}

.head_ul > li > a div span {
    display: block;
    line-height: 18px;
    color: #19a5e0;
    position: relative;
    top: 0;
    text-transform: capitalize;
    transition: all 0.5s ease 0s;
    -webkit-transition: all 0.5s ease 0s;
    -moz-transition: all 0.5s ease 0s;
    -o-transition: all 0.5s ease 0s;
}

.head_ul > li.active > a div span {
    color: #2b71a8;
}

.head_ul > li:hover > a div span{
    top: -19px;
}

/*------------------------------------------------------- media -------------------------------------------------------*/
/*@media screen and (max-width: 2560px) {*/
/*    .head_logo_text > span {*/
/*        font-size: 35px;*/
/*    }*/
/*    .head_nav {*/
/*        top: 37%;*/
/*    }*/
/*}*/

/*@media screen and (max-width: 2100px) {*/
/*    .head_logo_text > span {*/
/*        font-size: 40px;*/
/*    }*/
/*    .head_nav {*/
/*        top: 37%;*/
/*    }*/
/*}*/

/*@media screen and (max-width: 1900px) {*/
/*    .head_logo_text > span {*/
/*        font-size: 35px;*/
/*    }*/
/*    .head_nav {*/
/*        top: 33%;*/
/*    }*/
/*}*/


/*@media screen and (max-width: 1650px) {*/
/*    .head_logo_text > span {*/
/*        font-size: 33px;*/
/*    }*/
/*}*/

/*@media screen and (max-width: 1560px) {*/
/*    .head_logo_text > span {*/
/*        font-size: 30px;*/
/*    }*/
/*}*/

/*@media screen and (max-width: 1560px) and (max-height: 900px) {*/
/*    .head_nav {*/
/*        top: 32%;*/
/*    }*/
/*}*/

/*@media screen and (max-width: 1560px) and (max-height: 800px) {*/
/*    .head_nav {*/
/*        top: 30%;*/
/*    }*/
/*}*/

/*@media screen and (max-width: 1400px) {*/
/*    .head_logo_text {*/
/*        width: 20%;*/
/*    }*/
/*}*/

/*@media screen and (max-width: 1350px) and (max-height: 900px) {*/
/*    .head_logo_text > span {*/
/*        font-size: 28px;*/
/*        text-indent: 5px;*/
/*    }*/
/*    .head_nav {*/
/*        top: 33%;*/
/*    }*/
/*}*/

/*@media screen and (max-width: 1350px) and (max-height: 800px) {*/
/*    .head_logo_text > span {*/
/*        font-size: 28px;*/
/*        text-indent: 5px;*/
/*    }*/
/*    .head_nav {*/
/*        top: 30%;*/
/*    }*/
/*}*/

/*@media screen and (max-width: 1350px) and (max-height: 650px) {*/
/*    .head_logo_text > span {*/
/*        font-size: 28px;*/
/*        text-indent: 5px;*/
/*    }*/
/*    .head_nav {*/
/*        top: 26%;*/
/*    }*/
/*}*/

/*@media screen and (max-width: 1200px) {*/
/*    .head_logo_text > span {*/
/*        font-size: 25px;*/
/*        text-indent: 5px;*/
/*    }*/
/*    .head_nav {*/
/*        top: 27%;*/
/*    }*/
/*}*/


/*@media screen and (max-width: 1150px) and (max-height: 550px) {*/
/*    .head_logo_text > span {*/
/*        font-size: 23px;*/
/*        text-indent: 5px;*/
/*    }*/
/*    .head_nav {*/
/*        top: 22%;*/
/*    }*/
/*    .head_ul > li > a div span {*/
/*        font-size: 14px;*/
/*    }*/
/*}*/

/*@media screen and (max-width: 1050px)  and (max-height: 750px) {*/
/*    .head_logo_text > span {*/
/*        font-size: 21px;*/
/*        text-indent: 5px;*/
/*    }*/
/*    .head_ul > li > a div span {*/
/*        font-size: 13px;*/
/*    }*/
/*    .head_nav {*/
/*        top: 29%;*/
/*    }*/
/*}*/

/*@media screen and (max-width: 1050px)  and (max-height: 500px) {*/
/*    .head_logo_text > span {*/
/*        font-size: 21px;*/
/*        text-indent: 5px;*/
/*    }*/
/*    .head_ul > li > a div span {*/
/*        font-size: 13px;*/
/*    }*/
/*    .head_nav {*/
/*        top: 20%;*/
/*    }*/
/*}*/