CSS:请问怎么让我这里的文本垂直居中？

Html:

 <script src="http://www.v2ex.com//at.alicdn.com/t/font_wucl02m681zia4i.js" type="text/Javascript"></script> <div id="postMeta"> <!-- 博文分类 --> <a rel="nofollow noopener" href="https://www.cnblogs.com/iMath/category/1107555.html" id="catogory"> <svg class="icon" aria-hidden="true"> <use xlink:href="#icon-fenlei2"></use> </svg> </a> <!-- 阅读统计 --> <div id="postViewCount"> <svg class="icon" aria-hidden="true"> <use xlink:href="#icon-yuedu1"></use> </svg> <span class="post_view_count">5531</span> </div> <!-- 发布日期 --> <div> <svg class="icon" aria-hidden="true"> <use xlink:href="#icon-history"></use> </svg> <span class="post-date">2018-06-25</span> </div> <!-- 编辑 --> <a rel="nofollow noopener" href="https://i.cnblogs.com/EditPosts.aspx?postid=9223247"> <svg class="icon" aria-hidden="true" id="icon-bianji"> <use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#icon-bianji4"></use> </svg> </a> </div> 

CSS:

#postMeta{ display: flex; justify-content: space-around; align-items: center; /* height:100px; */ }