grafana/public/sass/components/_sidemenu.scss

.sidemenu {
  display: flex;
  flex-flow: column;
  flex-direction: column;
  width: $side-menu-width;
  background-color: $side-menu-bg;
  z-index: 1;

  a:focus {
    text-decoration: none;
  }
}

.sidemenu__top {
  flex-grow: 1;
}

.sidemenu__bottom {
  padding-bottom: $spacer;
}

.sidemenu-item {
  position: relative;
  @include left-brand-border();

  &.active,
  &:hover {
    background-color: $side-menu-item-hover-bg;
    @include left-brand-border-gradient();

    .dropdown-menu {
      margin: 0;
      display: block;
      opacity: 0;
      top: 0px;
      // important to overlap it otherwise it can be hidden
      // again by the mouse getting outside the hover space
      left: $side-menu-width - 2px;
      @include animation('dropdown-anim 100ms ease-in-out 100ms forwards');
      z-index: 1;
    }
  }
}

.dropup.sidemenu-item:hover .dropdown-menu {
  top: auto !important;
}

.sidemenu-link {
  color: $link-color;
  line-height: 42px;
  padding: 0px 10px 0px 10px;
  display: block;
  position: relative;
  font-size: 16px;
  border: 1px solid transparent;

  img {
    border-radius: 50%;
    width: 28px;
    height: 28px;
    box-shadow: 0 0 14px 2px rgba(255,255,255, 0.05);
  }
}

@include keyframes(dropdown-anim) {
  0% {
    opacity: 0;
    //transform: translate3d(-5%,0,0);
  }
  100% {
    opacity: 1;
    //transform: translate3d(0,0,0);
  }
}

.icon-circle {
  width: 35px;
  height: 35px;
  display: inline-block;
  i {
    color: $link-color;
    opacity: .7;
    position: relative;
    left: 3px;
    font-size: 130%;
  }

  .fa {
    top: 2px;
  }

  .icon-gf {
    top: 5px;
  }

  img {
    left: 3px;
    position: relative;
  }
}

.side-menu-header {
  padding: 10px 10px 10px 20px;
  white-space: nowrap;
  background-color: $side-menu-item-hover-bg;
  font-size: 17px;
}

li.sidemenu-org-switcher {
  border-bottom: 1px solid $dropdownDividerBottom;
}

.sidemenu-org-switcher__org-name {
  font-size: $font-size-base;
}

.sidemenu-org-switcher__org-current {
  font-size: $font-size-xs;
  color: $text-color-weak;
  position: relative;
  top: -2px;
}

.sidemenu-org-switcher__switch {
  font-size: $font-size-sm;
  padding-left: 1.5rem;
  display: flex;
  align-items: center;
  > i.fa.fa-random {
    margin-right: 4px;
    top: 1px;
  }
}