解决方法一:
借鉴相关文章:
html - How to remove the space between inline-block elements?
转自:https://blog.youkuaiyun.com/qq_33549229/article/details/52711496
解决方法二:
给每个div设置 vertical-align:middle 即可,转自https://www.cnblogs.com/Knowledge-is-infinite/p/12536439.html