1. Check whether the style css file is loaded successfully (press F12) 2.1 If there is no problem, clear the cache and load it again 3.2 If there is no problem, check whether the style name of the css declaration and the new declaration have the same name and conflict 4. Character issues
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
1. Check whether the style css file is loaded successfully (press F12)
2.1 If there is no problem, clear the cache and load it again
3.2 If there is no problem, check whether the style name of the css declaration and the new declaration have the same name and conflict
4. Character issues