#pos {
      position: relative;
      user-select: none;
    }

    .cross {
      width: 9px;
      height: 9px;
      position: absolute;
      cursor: default;
      overflow: visible;
    }

    .cross .line {
      position: absolute;
      /* background-color: blue; */
      /* opacity: 0.5; */
    }

    .cross .vertical {
      width: 4px;
      height: 9px;
      left: -4px;
      top: -4px;
      border-right: 0.5px solid blue;
    }

    .cross .horizontal {
      width: 9px;
      height: 4px;
      top: -4px;
      left: -4px;
      border-bottom: 0.5px solid blue;
    }

    /* 删除区域提示 */
    #delete-zone {
      position: absolute;
      width: 20px;
      height: 20px;
      right: 0;
      bottom: 0;
      background: rgba(255, 0, 0, 0.1);
      pointer-events: none;
      color: #FF9800;
      font-size: 12px;
      line-height: 19px;
      text-align: center;
    }

    #cursor {}
    #cursor .horizontal,#cursor .vertical {border-color: red;}