a.tab-button
      position: relative
      text-decoration: none
      display: block
      float: left
      color: #fff
      text-align: center
      padding: 5px 0 7px
      line-height: 1.2em
      padding: 6px 2px 6px 3px
      font-weight: bold
      font-family: Helvetica, Arial, sans-serif
      +text-shadow(black 1px 1px 0)
      font-size: 12px
      background: #ac322f
      +box-shadow(0 0 0 1px rgba(0, 0, 0, 0.1) inset, 0 1px 0 #ac322f inset, 0 2px 1px rgba(255, 255, 255, 0.2) inset)
      margin-top: 7px

      &:first-child
        margin-left: 0
        +border-radius(4px 0 0 0)

      &.posts
        width: 111px

      &.events
        width: 90px

      &.announcements
        width: 113px

      &.groupPosts
        width: 83px

      &.users
        width: 73px
        height: 15px
        padding: 10px 0 15px 0
        +border-radius(0 4px 0 0)

      &.users.current
        padding: 15px 0 13px 0