html,body
{
    position: relative;
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
}

.topbar a:link{
  color: black;
  text-decoration:none;/用于去除下划线/
}

.topbar a:visited{
  color: black;
}

.topbar a:active{
  color:black ;
}

.topbar a:hover{
  color: black;
}

.topbar {
    margin:0px;
    background:#ffffff;
    height:40px;
    text-align:right;
    font-size:12px;
    border-bottom:1px solid #CFCFCF;
}

.topbar .topmenu {

}

.topbar img {
  width:18px;
  height:18px;
  vertical-align: middle;
}

.side_menu {
    height:100%;
}

.side_menu ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    width: 100%;
    font-size:14px;
}

.side_menu li a {
    display: block;
    color: #ffffff;
    padding: 16px 32px;
    text-decoration: none;
}
/* 鼠标移动到选项上修改背景颜色 */
.side_menu li a:hover {
    background-color: #233240;
    color: #ffffff;
}
.side_menu li a.active {
    background-color: #233240;
    color: #3d96f9;
}
.side_menu img {
    vertical-align: middle;
}

.side_logo {
    height:80px;
    color:#ffffff;
    font-size:14px;
    white-space:nowrap;
}

.side_logo img {
vertical-align: middle;
width:18px;
margin-right:10px;
margin-left:20px;
}

.big-container {
    display:flex;
    flex-direction:row;
    width:100%;
    height:100%;
    background:#ff0000;
}

.big-container-left {
    width: 220px;
    height: 100%;
    background: #2c3e50;
}

.big-container-right {
    height:100%;
    background:#f6f6f6;
    flex-grow: 1;/*铺满剩余空间*/
    display:flex;
    flex-direction:column;
    justify-content:flex-start;
}

.big-container-right-content {
    margin:15px;
    flex-grow: 1;/*铺满剩余空间*/
    display:flex;
    flex-direction:column;
    justify-content:flex-start;


}

.big-container-right-content .page-manual {
    width:100%;
    background-color:white;
    border-radius: 5px;
    padding:10px;
    margin-bottom:10px;
    font-size:12px;
    text-align:left;
    line-height:20px;
    box-shadow: 5px 2px 2px #cfcfcf;
}

.btn-link-normal {
    border-radius: 3px;
    border:1px solid #d0f5e0;
    background:#e7faf0;
    padding:3px 10px;
    font-size:12px;
    color:#13ce66;
    text-decoration:none;/用于去除下划线/
}

.btn-link-active {
    border-radius: 3px;
    border:1px solid #d1e9ff;
    background:#e8f4ff;
    padding:3px 10px;
    font-size:12px;
    color:#1890ff;
    text-decoration:none;/用于去除下划线/
}

.btn-link-empty {
    border-radius: 3px;
    border:1px solid #cfcfcf;
    background:#efefef;
    padding:3px 10px;
    font-size:12px;
    color:#666666;
    text-decoration:none;/用于去除下划线/
}

.btn-link-alarm {
    border-radius: 3px;
    border:1px solid #d1e9ff;
    background:#e8f4ff;
    padding:3px 10px;
    font-size:12px;
    color:#D04848;
    text-decoration:none;/用于去除下划线/
}