.top-nav{
    height: 48px;
    background-color: var(--essential-color);
}
.centre-box {
    width: 1200px;
    margin: 0 auto;
}
.centre-box .nav {
    display: flex;
    -webkit-justify-content: space-around;
    -ms-flex-pack: distribute;
    justify-content: space-around;
}
.centre-box .nav a {
    color: white;
    line-height: 48px;
    font-size: 20px;
    display: block;
    height: 48px;
    padding: 0 30px;
    box-sizing: border-box;
}

.syw-ztbj{
    height: 160px;
    background: url(/static/images/bj-1.png) no-repeat;
}



/*标题*/
.syz-tb {
    background: linear-gradient(180.00deg, rgba(227, 87, 103, 1),rgba(200, 8, 31, 0) 100%);
}




.layui-btn-sma {
    height: 30px;
    line-height: 30px;
    padding: 0 10px;
    font-size: 12px;
    border: 0;
}