admin/public/plugins/element-plus/theme-chalk/src/option.scss

@use 'sass:map';

@use 'mixins/mixins' as *;
@use 'common/var' as *;

$checked-icon: "data:image/svg+xml;utf8,%3Csvg class='icon' width='200' height='200' viewBox='0 0 1024 1024' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath fill='currentColor' d='M406.656 706.944L195.84 496.256a32 32 0 10-45.248 45.248l256 256 512-512a32 32 0 00-45.248-45.248L406.592 706.944z'%3E%3C/path%3E%3C/svg%3E";

@mixin checked-icon {
  content: '';
  position: absolute;
  top: 50%;
  right: 20px;
  border-top: none;
  border-right: none;
  background-repeat: no-repeat;
  background-position: center;
  background-color: map.get($select-option, 'selected-text-color');
  mask: url('#{$checked-icon}') no-repeat;
  mask-size: 100% 100%;
  -webkit-mask: url('#{$checked-icon}') no-repeat;
  -webkit-mask-size: 100% 100%;
  transform: translateY(-50%);
  width: 12px;
  height: 12px;
}

@include b(select-dropdown) {
  @include e(item) {
    font-size: map.get($select, 'font-size');
    // 20 as the padding of option item, 12 as the size of ✓ icon size
    padding: 0 #{20 + 12}px 0 20px;
    position: relative;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: map.get($select-option, 'text-color');
    height: map.get($select-option, 'height');
    line-height: map.get($select-option, 'height');
    box-sizing: border-box;
    cursor: pointer;

    @include when(hovering) {
      background-color: map.get($select-option, 'hover-background');
    }

    @include when(selected) {
      color: map.get($select-option, 'selected-text-color');
      font-weight: bold;
    }

    @include when(disabled) {
      color: map.get($select-option, 'disabled-color');
      cursor: not-allowed;
      background-color: unset;
    }
  }

  @include when(multiple) {
    .#{$namespace}-select-dropdown__item.is-selected {
      &::after {
        @include checked-icon;
      }
    }

    .#{$namespace}-select-dropdown__item.is-disabled {
      &::after {
        background-color: map.get($select-option, 'disabled-color');
      }
    }
  }
}