.layui-header {
    background-color: #393D49;
}
.layui-header .layui-logo {
    padding: 0 20px;
    font-size: 16px;
    line-height: 60px;
    float: left;
    width: 200px;
    color:#fff;
    background:#2c2f3b;
}
.left {
    width: 200px;
    position: absolute;
    left: 0;
    top: 60px;
    bottom: 0;
    background: #393D49;
}
.content {
    position: absolute;
    left: 200px;
    top: 75px;
    bottom: 0;
    right: 0;
    background: #fff;
    padding-top:15px;   
}