.wrap{
    /* position:fixed; */
    top:0;
    z-index:200;
    display:flex;
    width:100%;
    flex-direction:row;
    justify-content:center;
    transition:opacity 0.5s ease-in-out;opacity:1
}
.bar{
    display:flex;
    flex-shrink:1;
    position:fixed;
    top:0;
    left:0;
    width:100%;
    background: #000000;
    opacity: 0.6;
    /* border-radius: 10px; */
    z-index: 200;
}
.navwrap{
    display:inline-block;
    position:relative;
    width:750px;
    width:auto
}
.navbar{
    display:inline-block;
    list-style-type:none;
    padding-right:10px;
    margin-left:40px;
}
.btn_text{
    position:relative;
    float:left;
    width:auto;
    height:66px;
    margin:0 30px !important;
    line-height:66px;
    font-size:17px;
    font-weight:normal;
    font-stretch:normal;
    font-family: '微软雅黑';
    letter-spacing:0px;
    color:#ccc;
    text-align:center;
    cursor:pointer;
    -webkit-user-select:none;
    -moz-user-select:none;
    -ms-user-select:none;
    user-select:none;
    text-decoration:none
}
.btn_text:hover{
    text-shadow:0 0 10px #2fc4ff,0 0 20px #2fc4ff,0 0 40px #2fc4ff;
    color:#fff;
}
.enter{
        text-shadow:0 0 10px #2fc4ff,0 0 20px #2fc4ff,0 0 40px #2fc4ff;
        color:#fff;
}
.hover_div{
    position: absolute;
    background-color: #2fc4ff;
    height: 5px;
    left: 70px;
    width: 40px;
    top: 0px;
}