What is the meaning of external formula - PHP Chinese website Q&A - What is the meaning of external formula - PHP Chinese website Q&A
Take a look around and learn.
使html的页面比较干净，如果多个网页用到该css样式，这样就可以实现代码的重复使用，便于维护！
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
What is the meaning of external formula - PHP Chinese website Q&A - What is the meaning of external formula - PHP Chinese website Q&A
Take a look around and learn.
使html的页面比较干净，如果多个网页用到该css样式，这样就可以实现代码的重复使用，便于维护！