body{
}

header{
    height: 60px;
    background: rgb(51, 51, 51);
    color: white;
    vertical-align: middle;
}
header h1{
    margin: 0;
    padding: 8px;
}
header > .icon{
    display: none;
}

header h1,span{
    vertical-align: middle;
    display: inline-block;
}

a{
    text-decoration: none;
    color: aliceblue;
}

nav {
    float: right;
    margin: 16px;
}
nav form{
    float: right;
}
nav form button{
    border: none;
    color: aliceblue;
    background-color: rgba(255, 255, 255, 0);
}

nav a{
    margin-right: 8px;
}

nav a:hover , button:hover{
    color: #ff93ed;
}

li{
    list-style-type: none;
}


aside{
    width: 200px;
    height: 100%;
    background-color: #23262e;
    overflow-x: hidden;
    box-sizing: border-box;
    position: fixed;
    top: 60px;
    bottom: 0;
    z-index: 10
}
aside ul,li {
    margin: 0;
    padding: 0;
    list-style: none
}
aside ul {
    width: 100%;
    height: auto
}

aside li {
    width: 100%;
    height: 45px;
    line-height: 45px;
    padding-left: 20px;
    box-sizing: border-box;
    color: #fff;
    margin-bottom: 1px;
    cursor: pointer;
    background-color: #393d49;
    font-size: 16px;
    font-weight: 600
}

aside li a {
    width: 100%;
    height: 100%;
    display: block;
    text-decoration: none;
    font-size: 16px;
    color: #fff
}

aside li.on {
    background-color: #57c8f2;
    color: #23262e;
    font-size: 18px;
    font-weight: 600
}

aside li.on a {
    color: #23262e;
    font-weight: 600
}

aside dl,dt {
    margin: 0;
    padding: 0;
    list-style: none
}

aside dl {
    width: 100%;
    color: #fff;
    display: none
}

aside dt {
    width: 100%;
    height: 40px;
    line-height: 40px;
    border-bottom: 1px solid #393d49;
    padding-left: 25px;
    box-sizing: border-box;
    font-size: 14px;
    cursor: pointer
}

aside dt a {
    display: block;
    width: 100%;
    height: 100%;
    color: #fff;
    text-decoration: none
}

aside dt.on {
    font-weight: 600;
    font-size: 14px;
    background: url("../images/right_arrow.png")right center no-repeat;
    background-size: 10%;
    color: #91dcf7
}

aside dt.on a {
    color: #91dcf7
}
article {
    width: calc(100% - 200px);
    height: calc(100% - 60px);
    background: #f1f2f7;
    position: absolute;
    left: 200px;
    top: 60px;
    overflow-x: hidden;
    overflow-y: auto
}

table {
    border-collapse: collapse;
    width: 100%;
}

th,
td {
    border: 1px solid black;
    padding: 8px;
    text-align: center;
}

th {
    background-color: #f2f2f2;
}


@media screen and (max-width: 992px) {

    aside{
        display: none;
    }
    article{
        left:0;
        width: 100%;
        overflow: auto;
    }
    header > span{
        display: none;
    }
    header > .icon{
        display: inline-block;
        margin-left: 8px;
        font-size: 1.2rem;
    }
}