[Suggestion]: Adding a Scroll-To-top Button .

Summary

Please add a "Scroll to Top" button to improve user experience. The button should appear after scrolling down and allow users to quickly return to the top of the page.

Page

No response

Details

I would like to request the addition of a "Scroll to Top" button to the website. This feature would enhance the user experience by allowing users to quickly navigate back to the top of the page without needing to manually scroll up, especially on longer pages.

-->Expected Behavior:

1. A button should appear at the bottom right (or another appropriate location) of the screen after the user has scrolled down a certain distance.

2.Clicking the button should smoothly scroll the user back to the top of the page.

3.The button should have a user-friendly design that fits well with the website's overall theme.

-->Benefits:

1.Improves user navigation and accessibility.
2.Enhances overall user experience, especially for pages with extensive content.

-->Additional Context:

This feature is commonly seen on many modern websites and is appreciated by users for its convenience.

未确定任何页面、文件、测试或入口点。首先检查 react.dev 的页面布局以及现有的按钮或导航模式，然后确定滚动控件应放置的位置，以及它应如何与网站主题保持一致。完成标准是：滚动后会出现一个按钮，能够平滑地将用户带回顶部，并且符合网站的设计。