bigcapital/client/src/style/views/Sidebar.scss

$sidebar-background: #01194e;
$sidebar-text-color: #fff;
$sidebar-width: 220px;
$sidebar-menu-item-color: #b8c0d5;

$sidebar-popover-submenu-bg: rgb(1, 20, 62);

.sidebar {
  background: $sidebar-background;
  color: $sidebar-text-color;
  width: $sidebar-width;
  position: fixed;
  height: 100%;

  .ScrollbarsCustom-Track {
    &.ScrollbarsCustom-TrackY,
    &.ScrollbarsCustom-TrackX{
      background: rgba(0, 0, 0, 0);
    }
  }
  .ScrollbarsCustom-Thumb{
    &.ScrollbarsCustom-ThumbX,
    &.ScrollbarsCustom-ThumbY {
      background: rgba(0, 0, 0, 0);
    }      
  }

  &:hover {
    .ScrollbarsCustom-Thumb{
      &.ScrollbarsCustom-ThumbX,
      &.ScrollbarsCustom-ThumbY {
        background: rgba(255, 255, 255, 0.25);
      }      
    }
  }
  &__head{
    padding: 16px 12px;
   
    &-logo{
      margin-top: 4px;

      svg{
        opacity: 0.4;
      }
    }
  }

  &-menu {
    background: transparent;
    padding: 0;
    min-width: $sidebar-width;
    border-radius: 0;
    padding-bottom: 2rem;

    .#{$ns}-menu-item {
      color: $sidebar-menu-item-color;
      border-radius: 0;
      padding: 10px 16px;
      font-size: 15px;
      font-weight: 400;

      &:hover,
      &.bp3-active {
        background: #012470;
        color: #c1c9dd;
      }
      &:focus,
      &:active {
        background: #01143e;
      }

      > .#{$ns}-icon {
        color: #767b9b;
        margin-right: 14px;
        margin-top: 0;
      }
      > .#{$ns}-icon-caret-right {
        margin-right: -4px;
        margin-top: 3px;
        color: #42547b;
      }
    }

    .#{$ns}-submenu {
      .#{$ns}-collapse {
        border-left: 2px solid rgba(255, 255, 255, 0.15);

        &-body {
          background-color: rgb(11, 34, 85);
          padding-bottom: 6px;
          padding-top: 6px;
        }

        .#{$ns}-menu-item {
          padding: 7px 16px 7px 18px;
          font-size: 15px;
          color: #8a95b6;

          &:hover,
          &.bp3-active {
            background: transparent;
            color: #c5cbe3;
          }
        }
      }
      .#{$ns}-popover {
        padding: 0;

        &-content {
          box-shadow: 0 0 0;
        }
      }
    }
    .#{$ns}-popover-target.#{$ns}-popover-open .#{$ns}-menu-item {
      color: $sidebar-menu-item-color;
    }
    .#{$ns}-menu-divider {
      border-top-color: #1d366a;
      color: #6b708c;
      margin: 4px 0;
    }
  }
}