图1，input是fixed的，focus之后就产生下面的问题。没有头绪，如何解决？
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When focusing, change fixed to absolute
A very common bug, search online and there are other solutions
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
When focusing, change fixed to absolute
A very common bug, search online and there are other solutions