discourse/app/assets/stylesheets/common/select-box-kit/multi-combobox.scss

.multi-combobox {
  width: 300px;
  background: $secondary;
  border: 1px solid dark-light-diff($primary, $secondary, 90%, -60%);

  .select-box-kit-body {
    width: 100%;
  }

  .select-box-kit-row {
    margin: 5px;
    min-height: 1px;
    padding: 5px;
  }

  .select-box-kit-filter {
    border-top: 1px solid $primary-low;
  }

  .select-box-kit-header {
    background: $secondary;
    border-bottom: 1px solid transparent;

    &.is-focused {
      border-bottom: 1px solid $primary-low;
      box-shadow: $tertiary 0px 0px 6px 0px;
    }
  }

  &.is-disabled {
    .select-box-kit-header {
      background: #e9e9e9;
      border-color: #ddd;
    }
  }

  &.is-highlighted {
    .select-box-kit-header {
      border: 1px solid $tertiary;
      box-shadow: $tertiary 0px 0px 6px 0px;
    }
  }

  &.is-expanded {
    .select-box-kit-wrapper {
      display: block;
      border: 1px solid $tertiary;
      box-shadow: $tertiary 0px 0px 6px 0px;
    }

    .select-box-kit-header {
      border-radius: 3px 3px 0 0;
    }

    .select-box-kit-body {
      border-radius: 3px 3px 0 0;
    }
  }

  .choices {
    list-style: none;
    margin: 0;
    padding: 5px;
  }

  .choice-placeholder {
    padding: 0 5px;
    margin: 2px 0;
    border: 1px solid transparent;
    display: inline-flex;
    flex: 1;
  }

  .filter {
    display: inline-flex;
    align-items: center;
    justify-content: flex-start;
    margin: 0;
    padding: 0;
    white-space: nowrap;
  }

  .select-box-kit-filter-input, .select-box-kit-filter-input:focus {
    border: none;
    background: none;
    display: inline-block;
    width: 100%;
    outline: none;
    min-width: auto;
    padding: 0;
    margin: 0;
    outline: 0;
    border: 0;
    -webkit-box-shadow: none;
    box-shadow: none;
    border-radius: 0;
  }

  .selected-name {
    display: inline-flex;
    align-items: center;
    justify-content: flex-start;
    padding: 0 5px;
    margin: 2px 0;
    color: $primary;
    cursor: default;
    border: 1px solid $primary-medium;
    border-radius: 3px;
    box-shadow: 0 0 2px $secondary inset, 0 1px 0 rgba(0,0,0,0.05);
    background-clip: padding-box;
    -webkit-touch-callout: none;
    user-select: none;
    background-color: $primary-low;

    &:focus {
      border-color: $primary;
      outline: none;
    }

    .d-icon {
      margin-right: 5px;
      color: $primary-medium;
      cursor: pointer;
      font-size: 12px;

      &:hover {
        color: $primary;
      }
    }
  }
}