[grid布局](https://www.jianshu.com/p/d183265a8dad) ~~~ //grid单元格中元素水平对齐方法 justify-items: center; //grid单元格中元素垂直对齐方法 align-items:center; ~~~  实现一个这样的布局 ~~~ .button-list{ padding: 20px; display: grid; grid-template-columns: 1fr 1fr 1fr; justify-items: center; grid-row-gap: 10px; } ~~~