forgeplus/app/assets/stylesheets/admins/sidebar.scss

#sidebar {
  min-width: 200px;
  max-width: 200px;
  background: #272822;
  color: #fff;
  transition: all 0.5s;
  overflow-y: scroll;

  &::-webkit-scrollbar {
    display:none
  }

  &.active {
    min-width: 60px;
    max-width: 60px;
    text-align: center;

    .sidebar-header {
      padding: 10px;
      display: flex;
      flex-direction: column;

      &-logo {
        overflow: hidden;
        margin-bottom: 10px;

        & > .logo-label {
          display: none;
        }
      }
    }

    ul li a {
      padding: 10px;
      text-align: center;
      font-size: 0.85em;
      display: flex;
      justify-content: center;

      span { display: none }

      i {
        margin-right: 0;
        display: block;
        font-size: 1.8em;
        margin-bottom: 5px;
        width: 30px;
        height: 20px;
      }
    }

    .dropdown-toggle::after {
      top: auto;
      bottom: 10px;
      right: 50%;
      -webkit-transform: translateX(50%);
      -ms-transform: translateX(50%);
      transform: translateX(50%);
    }

    ul ul a {
      padding: 10px !important;

      span { display: none }

      i {
        margin-left: 0px;
        display: block;
        font-size: 0.8em;
        width: 30px;
        height: 10px;
      }
    }
  }

  .sidebar-header {
    padding: 20px;
    background: #272822;
    display: flex;
    flex-direction: row;
    justify-content: space-between;

    &-logo {
      display: flex;
      justify-content: space-between;
      align-items: center;

      & > img {
        //width: 40px;
        //height: auto;
        max-width: 130px !important;
        max-height: 40px !important;
        overflow: hidden;
      }

      & > .logo-label {
        font-size: 18px;
        color: darkgrey;
        margin-left: 10px;
      }
    }
  }

  #sidebarCollapse {
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    text-align: right;

    &.active {
      width: 40px;
      height: 30px;
      background: #3f3f3f;
      border: 1px solid grey;
      border-radius: 3px;

      i.fold { display: none; }
      i.unfold { display: block; }
    }

    i.fold {
      display: block;
    }
    i.unfold { display: none; }
  }

  a, a:hover, a:focus {
    color: inherit;
    text-decoration: none;
    transition: all 0.3s;
  }

  & > ul > li > a > i {
    width: 14px;
    height: 14px;
  }

  ul {
    &.components {
      padding: 20px 0;
      border-bottom: 1px solid #3f3f3f;
    }

    p {
      color: #fff;
      padding: 10px;
    }

    li > a {
      padding: 10px;
      font-size: 1em;
      display: block;
      text-align: left;

      i {
        margin-right: 10px;
        font-size: 1em;
        margin-bottom: 5px;
      }
    }

    li a {
      &:hover, &.active {
        color: #fff;
        background: #276891;
      }
    }

    li.active > a, a[aria-expanded="true"] {
      color: #fff;
      //background: #276891;
    }

    ul a {
      font-size: 0.9em !important;
      padding-left: 30px !important;
      background: #3f3f3f;
    }
  }
}

@media (max-width: 768px) {
  #sidebar {
    &.active {
      padding: 10px 5px;
      min-width: 40px;
      max-width: 40px;
      text-align: center;
      margin-left: 0;
      transform: none;

      .sidebar-header {
        padding: 0px;

        .sidebar-header-logo {
          display: none;
        }

        #sidebarCollapse {
          width: 30px;
          height: 20px;
        }
      }

      ul li a {
        padding: 10px;
        font-size: 0.85em;

        i {
          margin-right: 0;
          display: block;
          margin-bottom: 5px;
        }
      }

      & > ul > li > a > i {
        font-size: 1.8em;
      }

      ul ul a {
        padding: 10px !important;
      }
    }

    .sidebar-header {
    }
  }

  .dropdown-toggle::after {
    top: auto;
    bottom: 10px;
    right: 50%;
    -webkit-transform: translateX(50%);
    -ms-transform: translateX(50%);
    transform: translateX(50%);
  }
}