ant-design/components/select/style/index.less

@import "../../style/themes/default";
@import "../../style/mixins/index";
@import "../../input/style/mixin";

@select-prefix-cls: ~"@{ant-prefix}-select";

.selection__clear() {
  display: inline-block;
  font-style: normal;
  vertical-align: baseline;
  text-align: center;
  text-transform: none;
  text-rendering: auto;
  opacity: 0;
  position: absolute;
  right: 8px;
  z-index: 1;
  background: @component-background;
  top: 50%;
  font-size: @font-size-base;
  color: @disabled-color;
  width: 12px;
  height: 12px;
  margin-top: -6px;
  line-height: 12px;
  cursor: pointer;
  transition: color 0.3s ease, opacity 0.15s ease;
  &:before {
    display: block;
    .iconfont-font("\e62e");
  }
  &:hover {
    color: @text-color-secondary;
  }
}

.@{select-prefix-cls} {
  box-sizing: border-box;
  display: inline-block;
  position: relative;
  color: @text-color;
  font-size: @font-size-base;

  > ul > li > a {
    padding: 0;
    background-color: @component-background;
  }

  // arrow
  &-arrow {
    .iconfont-mixin();
    position: absolute;
    top: 50%;
    right: 8px;
    line-height: 1;
    margin-top: -6px;
    .iconfont-size-under-12px(9px);

    * {
      display: none;
    }

    &:before {
      content: '\e61d';
      transition: transform 0.2s ease;
    }
  }

  &-selection {
    outline: none;
    user-select: none;

    box-sizing: border-box;
    display: block;

    background-color: @component-background;
    border-radius: @border-radius-base;
    border: @border-width-base @border-style-base @border-color-base;
    transition: all .3s @ease-in-out;

    &:hover {
      .hover;
    }

    .@{select-prefix-cls}-focused &,
    &:focus,
    &:active {
      .active;
    }

    &__clear {
      .selection__clear();
    }

    &:hover &__clear {
      opacity: 1;
    }

    &-selected-value {
      float: left;
      overflow: hidden;
      text-overflow: ellipsis;
      white-space: nowrap;
      max-width: 100%;
      padding-right: 14px;
    }
  }

  &-disabled {
    color: @disabled-color;
  }

  &-disabled &-selection {
    background: @input-disabled-bg;
    cursor: not-allowed;
    &:hover,
    &:focus,
    &:active {
      border-color: @border-color-base;
      box-shadow: none;
    }

    &__clear {
      display: none;
      visibility: hidden;
      pointer-events: none;
    }
  }

  &-disabled &-selection--multiple &-selection__choice {
    background: @background-color-active;
    color: #aaa;
    padding-right: 10px;
    &__remove {
      display: none;
    }
  }

  &-selection--single {
    height: @input-height-base;
    position: relative;
    cursor: pointer;
  }

  &-selection__rendered {
    display: block;
    margin-left: 7px;
    margin-right: 7px;
    position: relative;
    line-height: @input-height-base - 2px;
    // https://github.com/ant-design/ant-design/issues/3481#issuecomment-254721026
    &:after {
      content: '.';
      visibility: hidden;
      pointer-events: none;
      display: inline-block;
      width: 0;
    }
  }

  &-lg {
    .@{select-prefix-cls}-selection--single {
      height: @input-height-lg;
    }
    .@{select-prefix-cls}-selection__rendered {
      line-height: @input-height-lg - 2px;
    }
    .@{select-prefix-cls}-selection--multiple {
      min-height: @input-height-lg;
      .@{select-prefix-cls}-selection__rendered {
        li {
          height: @input-height-lg - 8px;
          line-height: @input-height-lg - 8px;
        }
      }
      .@{select-prefix-cls}-selection__clear {
        top: @input-height-lg / 2;
      }
    }
  }

  &-sm {
    .@{select-prefix-cls}-selection--single {
      height: @input-height-sm;
    }
    .@{select-prefix-cls}-selection__rendered {
      line-height: @input-height-sm - 2px;
    }
    .@{select-prefix-cls}-selection--multiple {
      min-height: @input-height-sm;
      .@{select-prefix-cls}-selection__rendered {
        li {
          height: @input-height-sm - 8px;
          line-height: @input-height-sm - 8px;
        }
      }
      .@{select-prefix-cls}-selection__clear {
        top: @input-height-sm / 2;
      }
    }
  }

  &-disabled &-selection__choice__remove {
    color: @disabled-color;
    cursor: default;
    &:hover {
      color: @disabled-color;
    }
  }

  &-search__field__wrap {
    display: inline-block;
    position: relative;
  }

  &-selection__placeholder,
  &-search__field__placeholder { // for TreeSelect compatibility
    position: absolute;
    top: 50%;
    left: 0;
    right: 9px;
    color: @input-placeholder-color;
    line-height: 20px;
    height: 20px;
    max-width: 100%;
    margin-top: -10px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  &-search__field__placeholder {
    left: 8px;
  }

  &-search--inline {
    position: absolute;
    height: 100%;

    .@{select-prefix-cls}-selection--multiple & {
      float: left;
      position: static;
    }

    .@{select-prefix-cls}-search__field__wrap {
      width: 100%;
      height: 100%;
    }

    .@{select-prefix-cls}-search__field {
      border-width: 0;
      font-size: 100%;
      height: 100%;
      width: 100%;
      background: transparent;
      outline: 0;
      border-radius: @border-radius-base;
    }

    .@{select-prefix-cls}-search__field__mirror {
      position: absolute;
      top: 0;
      left: -9999px;
      white-space: pre;
      pointer-events: none;
    }

    > i {
      float: right;
    }
  }

  &-selection--multiple {
    min-height: @input-height-base;
    cursor: text;
    padding-bottom: 3px;
    .clearfix;

    .@{select-prefix-cls}-search--inline {
      width: auto;
      padding: 0;
      .@{select-prefix-cls}-search__field {
        width: 0.75em;
      }
    }

    .@{select-prefix-cls}-selection__rendered {
      margin-left: 5px;
      margin-bottom: -3px;
      height: auto;
    }

    > ul > li,
    .@{select-prefix-cls}-selection__rendered > ul > li {  // for tree-select
      margin-top: 3px;
      height: @input-height-base - 8px;
      line-height: @input-height-base - 8px;
    }

    .@{select-prefix-cls}-selection__choice {
      background-color: #f3f3f3;
      border-radius: 4px;
      cursor: default;
      float: left;
      margin-right: 4px;
      max-width: 99%;
      position: relative;
      overflow: hidden;
      transition: padding .3s @ease-in-out;
      padding: 0 20px 0 10px;
      &__disabled {
        padding: 0 10px;
      }
    }

    .@{select-prefix-cls}-selection__choice__content {
      display: inline-block;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
      max-width: 100%;
      transition: margin .3s @ease-in-out;
    }

    .@{select-prefix-cls}-selection__choice__remove {
      .iconfont-mixin();
      color: @text-color-secondary;
      line-height: inherit;
      cursor: pointer;
      display: inline-block;
      font-weight: bold;
      transition: all 0.3s @ease-in-out;
      .iconfont-size-under-12px(8px);
      position: absolute;
      right: 4px;
      padding: 0 0 0 8px;
      &:hover {
        color: #404040;
      }