.navDrawerWrapper {
  flex: 0 0 auto;
  background: var(--color-5);
}
.navDrawerWrapper .navDrawer {
  height: 100%;
  display: flex;
  flex-flow: column nowrap;
  position: relative;
  border-right: 1px solid #e5e5e5;
  background:
    linear-gradient(
      0deg,
      rgba(255, 255, 255, 0.6) 0%,
      rgba(255, 255, 255, 0.6) 100%
    ),
    #f5f5f5;
}
.navDrawerWrapper .bodyWrapper {
  flex: 1 1 0;
  position: relative;
  overflow-y: auto;
}
.navDrawerWrapper .bodyWrapper::-webkit-scrollbar {
  display: none;
}
.navDrawerWrapper .lessonTreeWrapper {
  height: 100%;
  overflow-y: auto;
}
.navDrawerWrapper .lessonTreeWrapper::-webkit-scrollbar {
  display: none;
}
.navDrawerWrapper .popUpWindowExpand {
  transform: translate(-50%);
  width: 250px;
  top: auto;
  bottom: 80px;
  left: 50%;
  z-index: 999;
}
.navDrawerWrapper .popUpWindowCollapse {
  width: 250px;
  top: auto;
  bottom: 10px;
  left: 70px;
  z-index: 999;
}
.navDrawerWrapper.mobile {
  position: fixed;
  top: 48px;
  left: 0;
  width: 100%;
  height: calc(var(--app-viewport-block-unit, 1dvh) * 100 - 48px);
  display: block;
  z-index: 20;
}
.navDrawerWrapper.mobile .navHeader {
  display: none;
}
.navDrawerWrapper.mobile .navDrawer {
  height: 100%;
  display: flex;
  flex-flow: column nowrap;
  position: relative;
}
