oil-station/fuintAdmin/src/assets/styles/sidebar.scss

#app {

  .main-container {
    min-height: 100%;
    transition: margin-left .28s;
    //margin-left: $base-sidebar-width;
    margin-left: var(--sidebar-width);
    position: relative;
  }

  .sidebarHide {
    margin-left: 0!important;
  }


  .sidebar-container {
    -webkit-transition: width .28s;
    transition: width 0.28s;
    width: $base-sidebar-width !important;
    background-color: $base-menu-background;
    height: 100%;
    position: fixed;
    font-size: 0px;
    top: 0;
    bottom: 0;
    left: 0;
    z-index: 1001;
    overflow: hidden;
    -webkit-box-shadow: 0px 3px 6px 1px rgba(0,0,0,0.1);
    box-shadow: 0px 3px 6px 1px rgba(0,0,0,0.1);
    margin-bottom: 100px;
    // reset element-ui css
    .horizontal-collapse-transition {
      transition: 0s width ease-in-out, 0s padding-left ease-in-out, 0s padding-right ease-in-out;
    }

    .scrollbar-wrapper {
      overflow-x: hidden !important;
    }

    .el-scrollbar__bar.is-vertical {
      right: 0px;
    }

    .el-scrollbar {
      height: 100%;
    }

    &.has-logo {
      .el-scrollbar {
        height: calc(100% - 50px);
      }
    }

    .is-horizontal {
      display: none;
    }

    a {
      display: inline-block;
      width: 100%;
      overflow: hidden;
    }

    .svg-icon {
      margin-right: 16px;
    }

    .el-menu {
      border: none;
      height: 100%;
      width: 100% !important;
    }

    .el-menu-item, .el-submenu__title {
      overflow: hidden !important;
      text-overflow: ellipsis !important;
      white-space: nowrap !important;
      height: 48px;
      line-height: 48px;
    }

    // menu hover
    .submenu-title-noDropdown,
    .el-submenu__title {
      //height: if($isCollapse,60px,48px) !important;
      height: var(--sidebar-height);
      &:hover {
        background-color: rgba(0, 0, 0, 0.06) !important;
      }
    }

    & .theme-dark .is-active > .el-submenu__title {
      color: white !important;
      background: linear-gradient( 229deg, #FF8646 0%, #FFA360 100%) !important;
      //border-top-left-radius: 8px !important; /* 左上圆角 */
      //border-top-right-radius: 8px !important; /* 右上圆角 */
      border-radius: 8px;
      i {
        color: #fff !important;
      }
    }

    & .nest-menu .el-submenu>.el-submenu__title,
    & .el-submenu .el-menu-item {
      min-width: $base-sidebar-width !important;
      background: red;
      &:hover {
        background-color: rgba(0, 0, 0, 0.06) !important;
      }
    }

    & .theme-dark .nest-menu .el-submenu>.el-submenu__title,
    & .theme-dark .el-submenu .el-menu-item {
      background-color: $base-sub-menu-background !important;

      &:hover {
        background-color: $base-sub-menu-hover !important;
      }
    }

    .el-menu-item.is-active {
      color: #FF9655 !important;
      //菜单点击上的背景颜色
      background: linear-gradient( 229deg, #FFEFE5 0%, #FFEFE5 100%) !important;
    }
    }

  .hideSidebar {
    //.sidebar-container {
    //  width: 54px !important;
    //}
    //
    //.main-container {
    //  margin-left: 54px;
    //}
    //
    //.submenu-title-noDropdown {
    //  padding: 0 !important;
    //  position: relative;
    //  .el-tooltip {
    //    padding: 0 !important;
    //
    //    .svg-icon {
    //      margin-left: 20px;
    //    }
    //  }
    //}
    //
    //.el-submenu {
    //  overflow: hidden;
    //
    //  &>.el-submenu__title {
    //    padding: 0 !important;
    //
    //    .svg-icon {
    //      margin-left: 20px;
    //    }
    //
    //  }
    //}
    //
    //.el-menu--collapse {
    //  .el-submenu {
    //    &>.el-submenu__title {
    //      &>span {
    //        height: 0;
    //        width: 0;
    //        overflow: hidden;
    //        visibility: hidden;
    //        display: inline-block;
    //      }
    //    }
    //  }
    //}
  }

  .el-menu--collapse .el-menu .el-submenu {
    min-width: $base-sidebar-width !important;
  }

  // mobile responsive
  .mobile {
    .main-container {
      margin-left: 0px;
    }

    .sidebar-container {
      transition: transform .28s;
      width: $base-sidebar-width !important;
    }

    &.hideSidebar {
      .sidebar-container {
        pointer-events: none;
        transition-duration: 0.3s;
        transform: translate3d(-$base-sidebar-width, 0, 0);
      }
    }
  }

  .withoutAnimation {

    .main-container,
    .sidebar-container {
      transition: none;
    }
  }
}

// when menu collapsed
.el-menu--vertical {
  &>.el-menu {
    .svg-icon {
      margin-right: 16px;
    }
  }

  .el-menu-item.is-active {
    color: white !important;
    //菜单点击上的背景颜色
    background: linear-gradient( 229deg, #FF9655 0%, #FF9655 100%) !important;
  }
  .nest-menu .el-submenu>.el-submenu__title,
  .el-menu-item {
    background-color: #FFFAF6 !important;
    &:hover {
      // you can use $subMenuHover
      color: #FFA46B !important;
      background-color: #FFEBDD !important;
    }
  }

  // the scroll bar appears when the subMenu is too long
  >.el-menu--popup {
    max-height: 100vh;
    overflow-y: auto;

    &::-webkit-scrollbar-track-piece {
      background: #d3dce6;
    }

    &::-webkit-scrollbar {
      width: 6px;
    }

    &::-webkit-scrollbar-thumb {
      background: #99a9bf;
      border-radius: 20px;
    }
  }
}