多行或者单行文本超出两行显示点点点，如果保证内容始终垂直居中？

.info_des {
      .margin-all(10, 10, 12, 8);
      display: flex;
      align-items:center;
      div{
        .line-height(21);
        .height(42);
        .font-size(14);
        color: #000;
        letter-spacing: 0.01px;
      }
    }
    
/*只能显示两行，超出显示省略号*/
.line_clamp2{
    overflow: hidden!important;
    text-overflow: ellipsis!important;
    -webkit-line-clamp: 2;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    white-space: normal;
    word-wrap: break-word;
}

<div class="info_des">
        <div class="line_clamp2">is the leading online shopping platform in is the leading online shopping platform inis the leading online shopping platform in</div>
</div>

.info_des {
      .margin-all(10, 10, 12, 8);
      display: flex;
      align-items:center;
      .height(42);
      div{
        .line-height(21);
        .font-size(14);
        color: #000;
        letter-spacing: 0.01px;
      }
    }