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Next/Link keeps reload in components

It is said that in next js we don't need to install react-router-dom because the path of our pages depend on the pages folder. Well, it actually works when I create button to move to another pages. But when I create components folder and create navbar component, it doesn't work properly as it was. The next/link keeps reloading when it moves to another pages.
import Link from "next/link";
export default function Navbar() {
return (
<nav className="bg-black flex justify-between p-5 text-white">
<h1 className="font-bold text-sky-400">
<Link href="/">Furniture App</Link>
</h1>
<div>
<Link href="about">About</Link>
<Link href="promos">Promos</Link>
</div>
</nav>
);
}
Do I have to create components in pages folder in order to make Next/Link works without reload the browser?

React.js NavBar: Is it possible to reference a different component's markup? (Trying to create a navbar that references to components in one route)

Basically I'm trying to make a navbar for a personal website application in which the navbar references content (About/Skills, etc.) all on single page (route). When making the navbar, I can easily reference markup with ids/classes BUT I would have to put all the html in one file.
I noticed that if I were to separate each content into its own react file (About.jsx, Skills.jsx, etc.) and import them, there didn't seem to be a way for me to reference the react component's markup.
I also noticed with react router, this wasn't feasible because each component would be on a separate route (which I don't want) rather than on a single route.
This is my current navbar file below; How exactly Can I import and reference the markup of the separate components?
import React from 'react';
import "../Styles/NavBar.scss";
import About from "./About.jsx"; (Not used)
import Skills from "./Skills.jsx"; (Not Used)
import Projects from "./Projects.jsx"; (Not used)
const NavBar = () => (
<div class="MainDivWrapper">
<div class="NavBarDiv">
<h1 class="NavBarH1">NavBar</h1>
<br/>
<nav>
About
Skills
Projects
</nav>
{/* <div id="AboutDiv">
<h1>About Me</h1>
<span>Just some text</span>
</div>
<div id="SkillsDiv">
<h1>Skills</h1>
<span>Just some text</span>
</div>
<div id="ProjectssDiv">
<h1>Projects</h1>
<span>Just some text</span>
</div> */}
</div>
<hr class="HeaderDivider"/>
</div>
)

You reference a JSX import like that:
/* Component have to start with a capital letter. file name can be anything (usually is the same as component) */
import MyComponent from "./MyComponent"
export default function MyApp() {
return (
<div>
/* other html/components here */
<MyComponent /> // selfing close tag
/* or */
<MyComponent> // with `children`
some content
</MyComponent>
</div>
)
}
Here is a codesandbox implementation of your code: https://codesandbox.io/s/stack-reactjs-navbar-is-it-possible-to-reference-a-different-components-markup-64oic?file=/src/App.js

Modifying Shopify Polaris Styles - Reactjs

I am trying to modify Shopify Polaris Button components colors for React, I tried to change style.css file but nothing happened.
Any idea how to do so?
App.js
import React, { Component } from 'react';
import '#shopify/polaris/styles.css';
import {Page, Card, Button} from '#shopify/polaris';
class App extends Component {
render() {
return (
<div className="App">
<Page title="Example app">
<Card sectioned>
<Button onClick={() => alert('Button clicked!')}>Example button</Button>
</Card>
</Page>
</div>
);
}
}
export default App;
I am trying to modify node_modules/#shopify/polaris/styles.css , but it does not make ay effect to button color.

The Polaris design system is meant to provide consistency to apps within the Shopify ecosystem. It’s not intended as an alternative to something like Bootstrap or Foundation, so changing button colors wasn’t something we built the library to support.

Even thou full colorizing on a button isn't possible. You can partially modify a button like so:
<div style={{color: '#bf0711'}}>
<Button monochrome outline>
Click Me
</Button>
</div>
This won't give you full control to like the background color but it can help to partially stylize the button. It creates an outline and light background when you roll over.

React bootstrap navbar not appropriate linking to other pages

I currently have an app with a few different pages, the routing works fine if I use the Link to component in the initial page, however from the navbar I get the message:
Cannot GET /page1
And I also noticed that the link on the top of the browser goes to: http://localhost:3000/page1 as opposed to http://localhost:3000/#/cities (like it would if I use Link to).
My current navbar code is this:
export class NavigationBar extends Component {
render(){
return(
<Navbar>
<Navbar.Header>
<Navbar.Brand>
Navbar
</Navbar.Brand>
</Navbar.Header>
<Nav>
<NavItem eventKey={1} href="/page1">Page1</NavItem>
<NavItem eventKey={2} href="/page2">Page2</NavItem>
</Nav>
</Navbar>);
}
}
If I just wrap the text up with Link to, it just works when we click on the text, which isn't what I want. What can I do so that the NavItem will behave like Link to but still look fine?
Thanks

I completely forgot that I need to wrap up each of my NavItem components with the LinkContainer from react-router-bootstrap.
That took care of everything.

After closing the WinJS appbar , content becomes unscrollable

I'm creating my first app here's a picture of what I'm talking about:
After I click on the appbar and then I close it , I can't scroll down to see the rest of the text.
Here's how the code for the appbar looks:
<div id="appBar" data-win-control="WinJS.UI.AppBar" data-win-options="{placement: 'top', layout: 'commands'}">
command1
command2
command3
command4
</div>
<div id="main_content">
</div>
I use fragments to navigate using the appbar and I display the fragments in the main_content so idk why it has problems.