```
*::before {
content:"我我我 \A 我我我";
white-space: pre; ** or pre-wrap **
}
```
答主：[Hemerson Varela](https://stackoverflow.com/users/1016588/hemerson-varela)
[原文地址]（https://stackoverflow.com/questions/17047694/add-line-break-to-after-or-before-pseudo-element-content）
