Cesium-Examples/examples/css/sideBar.css

.main-sidebar {
    position: fixed;
    z-index: 900;
    height: 100%;
}
.sidebar-menu{
    overflow: visible;
}
.sidebar {
    height: 100% !important;
    overflow: hidden;
    overflow-y: auto;
}

.skin-blue .main-sidebar {
    background-color: var(--sidebar-background-color);
}

.skin-blue .sidebar-menu > li.treeview:hover > a {
    border-left: 3px solid rgba(0, 0, 0, 0.1);
}

.skin-blue .sidebar-menu > li.treeview.active > a {
    border-left: 3px solid rgba(0, 0, 0, 0.1);
}

.skin-blue .sidebar .second-menu,
.skin-blue .sidebar .third-menu {
    padding-left: 0;
}

.skin-blue .sidebar .third-menu a {
    padding-left: 30px;
}

.skin-blue .sidebar a {
    color: #000000;
}

/*侧边栏滚动设置 start*/
#sidebar-menu > li:hover .sidebar-title-bar {
    position: static;
}

.sidebar-collapse #sidebar-menu > li:hover .sidebar-title-bar {
    position: fixed;
}

#sidebar-menu > li:hover > ul {
    position: static;
    height: auto;
}

.sidebar-collapse #sidebar-menu > li:hover > ul {
    position: fixed;
    overflow-y: auto;
}

a.sidebar-toggle {
    width: 100%;;
    height: 36px;
    line-height: 36px;
    text-align: center;
    background-color: var(--sidebar-background-color);
    color: var(--text-color) !important;
    display: block;
}

.sidebar-collapse a.sidebar-toggle div.fold {
    -webkit-transform: rotate(90deg);
    -moz-transform: rotate(90deg);
    -ms-transform: rotate(90deg);
    -o-transform: rotate(90deg);
    transform: rotate(90deg);
    transition: transform .5s;
}
.sidebar-collapse a.sidebar-toggle #suffix-title{
  display: none;
}

/*侧边栏滚动设置 end*/

.skin-blue .sidebar-menu > li.treeview.active > a span,
.skin-blue .sidebar-menu > li.treeview.active > a .iconName {
  color: var(--active-color);
}
.skin-blue .treeview-menu li > a {
    border-left: 3px solid var(--sidebar-background-color);
}
  
.skin-blue .treeview-menu li > a:hover,
.skin-blue .treeview-menu li.active > a {
    color: var(--active-color);
    background-color: var(--active-background-color);
    border-left-color: var(--active-color);
}
.skin-blue .treeview-menu li > a:hover > span,
.skin-blue .treeview-menu li.active > a > span{
  color: var(--active-color);
}

.skin-blue .treeview-menu > li > a {
    color: var(--text-color-secondary);
    padding: 10px 40px;
}

.skin-blue .sidebar-menu > li > .treeview-menu {
    margin: 0;
    background: var(--sidebar-background-color);
}

.sidebar-menu li.active > .treeview-menu {
    background: var(--sidebar-background-color);
}

.sidebar-title-bar .fa-angle-down,
.sidebar-title-bar .pull-right-container > .fa-angle-down {
    width: auto;
    height: auto;
    padding: 0;
    margin-right: 10px;
}

/*侧边栏收起后向右展开的边框宽度*/
.sidebar-mini.sidebar-collapse .sidebar-menu > li:hover > a > span:not(.pull-right),
.sidebar-mini.sidebar-collapse .sidebar-menu > li:hover > .treeview-menu {
    border-radius: 0;
    width: 230px;
}

/*侧边栏收起后向右展开时一级菜单箭头的位置*/
.sidebar-mini.sidebar-collapse .sidebar-menu > li:hover > a > .pull-right-container {
    left: 230px !important;
}

.sidebar-mini.sidebar-collapse .sidebar-menu > li > .treeview-menu {
    padding-top: 0;
    padding-bottom: 0;
    border-radius: 0;
}

.skin-blue .sidebar-menu > li:hover > a,
.skin-blue .sidebar-menu > li.active > a {
    color: var(--text-color);
    background: var(--sidebar-background-color);
}

.skin-blue .treeview-menu > li.active > a,
.skin-blue .treeview-menu > li > a:hover {
    color: var(--text-color);
}

.main-sidebar .iconName {
    margin-right: 4px;
    color: var(--text-color);
}

.menuTitle a.active {
    color: #f8f8f8;
}

.sidebar-menu span {
    color: var(--text-color);
}

li.menuTitle a {
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
    padding-right: 20px !important;
}

.main-sidebar .secondMenuTitle {
    font-weight: 400;
    color: var(--text-color-secondary);
}

.main-sidebar .thirdMenuTitle {
    font-size: 12px;
    padding-left: 32px;
    color: var(--text-color-secondary);
}

.main-sidebar .pull-right {
    color: var(--text-color-secondary)
}

@media screen and (max-width: 768px) {
    a.sidebar-toggle {
        position: absolute;
        top: 50%;
        width: 26px;
        height: 36px;
        left: 100%;
    }
    #suffix-title{
      display: none;
    }
    /*侧边栏滚动设置 start*/
    #sidebar-menu > li:hover .sidebar-title-bar {
        position: static;
    }

    .sidebar-collapse #sidebar-menu > li:hover .sidebar-title-bar {
        position: static;
    }

    #sidebar-menu > li:hover > ul {
        position: static;
        height: auto;
    }

    .sidebar-collapse #sidebar-menu > li:hover > ul {
        position: static;
        overflow-y: auto;
    }
}

/*侧边栏滚动条*/
.sidebar {
    -ms-scroll-chaining: chained;
    -ms-overflow-style: none;
    -ms-content-zooming: zoom;
    -ms-scroll-rails: none;
    -ms-content-zoom-limit-min: 100%;
    -ms-content-zoom-limit-max: 500%;
    -ms-scroll-snap-type: proximity;
    -ms-scroll-snap-points-x: snapList(100%, 200%, 300%, 400%, 500%);
}

.sidebar::-webkit-scrollbar {
    width: 0;
    background-color: rgba(0, 0, 0, 0);
}

/*侧边栏二级菜单滚动条*/
.scroll-list {
    -ms-scroll-chaining: chained;
    -ms-overflow-style: none;
    -ms-content-zooming: zoom;
    -ms-scroll-rails: none;
    -ms-content-zoom-limit-min: 100%;
    -ms-content-zoom-limit-max: 500%;
    -ms-scroll-snap-type: proximity;
    -ms-scroll-snap-points-x: snapList(100%, 200%, 300%, 400%, 500%);
}

.scroll-list::-webkit-scrollbar {
    width: 0;
    background-color: rgba(0, 0, 0, 0);
}