:before :after

 .li {
        padding-left: 10px; //
        border: 1px solid #000;
        font-size: 14px;
        margin-bottom: 0.2rem;
        overflow: hidden;
        white-space: nowrap;
        text-overflow: ellipsis;
        position: relative;

        &:before {
          content: "";
          width: 4px;
          height: 4px;
          background: rgba(90, 221, 255, 0.3);
          position: absolute;
          top: 9px;
          left: 0;
        }
      }