.headers{
    display: flex;
    justify-content: space-between;
    margin: 0 auto;
    padding: 0 100px;
    align-items: center;
}

@media screen and (max-width: 1680px){
    .headers {
        width: 93.705%;
        padding: 0 20px;
    }
}


/* .navlist{
    width: 720px;
} */
header{
    position: fixed;
    text-align: center;
    width: 100%;
    z-index: 9999;
}

/* .banner_box img{
    height:920px;
} */

.addheads{
    background: #fff;
    border-bottom: 1px solid #dfdede;
    box-shadow: inset 0px 15px 6px -15px rgba(0, 0, 0, 0.25);
}
.heads .navlist .item,.heads .header_top_right a{
color: #fff;
}

header:hover{
    background: #fff;
}
header:hover .navlist .item,header:hover .header_top_right a{
    color: #555 !important;
}
header .navlist .item:after{
   opacity: 0;
}
header:hover .navlist .item.checked:after{
    opacity: 1;
 }

 .addheads .navlist .item.checked:after{
    opacity: 1;
 }

 .fenl{
     display: flex;
     justify-content: center;
     height: 120px;
    line-height: 120px;
 }
 .fenl a {
    margin-right: 50px;
    padding: 0 9px;
    display: inline-block;
    font-size: 14px;
    position: relative;
    color: #666;
    width: auto;
}

.fenl a:after {
    height: 2px;
    width: 0;
    bottom: 40px;
    left: 0;
    content: '';
    display: block;
    background: #001eb4;
    -webkit-transition: all 300ms ease 0s;
    transition: all 300ms ease 0s;
    position: absolute;
}
.fenl a.on:after {
    width: 100%;
}
.fenl a:hover {
    color: #001eb4;
}
.fenl a:hover:after{
    width: 100%;
}