@mixin checkedBox {
  width: 50px;
  text-align: center;

  .box {
    cursor: pointer;
    @include ball(18px);
    display: inline-block;
    position: relative;
    border: 2px solid $color_border;
    border-radius: 2px;

    &.checked {
      background-color: $color_dark;
    }
  }

  &.small {
    width: 20px;
  }
}
