.header {
    height: 59px;
    border-bottom: 1px solid #404553;
    background-color: #393D49;
}
.logo {
    position: absolute;
    left: 0;
    font-size: 30px;
    line-height: 60px;
    display: inline-block;
    vertical-align: middle;
    color: white;
}
.nav {
    position: absolute;
    left: 200px;
}
body {
    min-height: 800px;
    background: url("https://api.dujin.org/bing/1920.php") #F2F2F2;
    background-repeat: no-repeat;
    background-size:  auto 100%;
    min-height: 1080px;
}
.body{
    padding-top: 15px;
}
.layui-card {
    border-radius: 10px !important;
    background-color: #ffffffe0 !important;
    backdrop-filter: blur(8px);
}

.layui-nav .layui-nav-item span{ padding:0 15px}
.nav-ul {font-size:16px;}
.nav-ul li {padding: 3px 0;border-radius: 8px}
.nav-ul li:hover {color:#ffffff !important;background: #01AAED}
#common_nav3 .nav-ul li:hover {color:#ffffff !important;background: #FFB800}
.nav-ul li:hover icon {background:#ffffff !important}
.nav-ul icon {
    background: #01AAED;
    display: inline-block;
    width: 14px;
    height: 14px;
    border-radius: 8px;
    line-height: 14px;
    text-align: center;
    font-style: normal;
    margin:0 5px 0 3px;
}
#common_nav3 .nav-ul icon {
    background:#FFB800 ;
}
#common_nav1 {
    columns: 2; // 默认列数
}

#common_nav1 .layui-card {
    width: 100%;
    break-inside: avoid;
    margin-bottom: 15px;
}
.layui-nav .layui-this:after, .layui-nav-bar, .layui-nav-tree .layui-nav-itemed:after{
    border-radius: 3px;
}