fix: 修复色弱模式下顶部导航栏和左侧菜单栏fixed定位失效问题

[zhangsantx]

Types of changes

• New feature
• Bug fix
• Documentation change
• Coding style change
• Refactoring
• Performance improvement
• Test cases
• Continuous integration
• Typescript definition change
• Breaking change

Background and context

修复开启色弱模式下，顶部导航栏和左侧菜单栏fixed定位失效问题

#345

Solution

将色弱模式下 body 元素上添加的 filter: invert(80%); 样式调整至 html 根元素上（https://developer.mozilla.org/zh-CN/docs/Web/CSS/position#fixed）

How is the change tested?

Changelog

Changelog(CN)	Changelog(EN)	Related issues
修复色弱模式下顶部导航栏和左侧菜单栏fixed定位失效问题		#345

Checklist:

• Provide changelog for relevant changes (e.g. bug fixes and new features) if applicable.
• Changes are submitted to the appropriate branch (e.g. features should be submitted to feature branch and others should be submitted to master branch)

Other information