ant-design/style/components/dropdown.less

@import "../mixins/index";
@dropdown-prefix-cls: ~"@{css-prefix}dropdown";

.@{dropdown-prefix-cls} {
  position: absolute;
  left: -9999px;
  top: -9999px;
  z-index: @zindex-dropdown;
  display: block;
  font-size: 12px;
  font-weight: normal;
  line-height: 1.5;

  &-wrap {
    position: relative;

    .@{btn-prefix-cls} > .@{iconfont-css-prefix}-down {
      .iconfont-size-under-12px(10px);
    }

    .anticon-down:before {
      transition: transform 0.2s ease;
    }
  }

  &-wrap-open {
    .anticon-down:before {
      .rotate(180deg);
    }
  }

  &-hidden,
  &-menu-hidden {
    display: none;
  }

  &-menu {
    outline: none;
    position: relative;
    list-style-type: none;
    padding: 0;
    margin: 0;
    text-align: left;
    background-color: #fff;
    border-radius: @border-radius-base;
    box-shadow: @box-shadow-base;
    background-clip: padding-box;
    border: 1px solid @border-color-base;

    &-item,
    &-submenu-title {
      padding: 7px 15px;
      margin: 0;
      clear: both;
      font-size: 12px;
      font-weight: normal;
      color: #666;
      white-space: nowrap;
      cursor: pointer;
      transition: background 0.3s ease;

      > a {
        color: #666;
        display: block;
        padding: 7px 15px;
        margin: -7px -15px;
      }

      &:hover {
        background-color: tint(@primary-color, 90%);
      }

      &-disabled {
        color: #ccc;
        cursor: not-allowed;
        pointer-events: none;

        &:hover {
          color: #ccc;
          background-color: #fff;
          cursor: not-allowed;
        }
      }

      &:first-child {
        border-radius: @border-radius-base @border-radius-base 0 0;
      }

      &:last-child {
        border-radius: 0 0 @border-radius-base @border-radius-base;
      }

      &-divider {
        height: 1px;
        overflow: hidden;
        background-color: @border-color-split;
        line-height: 0;
      }
    }

    &-submenu-title:after {
      font-family: "anticon" !important;
      position: absolute;
      content: "\e600";
      right: 15px;
      color: #999;
      .iconfont-size-under-12px(8px);
    }

    &-submenu-vertical {
      position: relative;
    }

    &-submenu-vertical > & {
      top: 0;
      left: 100%;
      position: absolute;
      min-width: 100%;
      margin-left: 4px;
      transform-origin: 0 0;
    }

    &-submenu:first-child &-submenu-title {
      border-radius: @border-radius-base @border-radius-base 0 0;
    }

    &-submenu:last-child &-submenu-title {
      border-radius: 0 0 @border-radius-base @border-radius-base;
    }
  }