/**************导航栏*******************/

.navBox {
    background: #0550ab;
}

.myNav {
    width: 1200px;
    background: #0550ab;
    margin: 0 auto;
}

.layui-nav .layui-this:after,
.layui-nav-bar,
.layui-nav-tree .layui-nav-itemed:after {
    background: orange;
}

.layui-nav .layui-nav-child dd.layui-this a,
.layui-nav-child dd.layui-this {
    background: #0550ab;
}