tailwind dark mode isn't extending fully when scrolling all the way on page-CodePudding

using dark mode in a nextjs web app with tailwind, when scrolling, if you scroll past the scroll container (almost like your bouncing off the bottom or top of the page when scrolling), the dark mode isn't extending all the way, so the color isn't applying and it's just the previous color underneath (white in this case), what is the reason for this and is there a way to extend the dark mode fully?

Browsers that don't work

Firefox
Brave
Chrome

Browsers that do work

Safari

stackoverflow and tailwindcss.com in dark mode handle this well and the dark mode extends fully on the whole page

_app.tsx

 <Store state={state} dispatch={dispatch}>
        <Head>
          <meta charSet="UTF-8" />
          <meta
            name="viewport"
            content="width=device-width, initial-scale=1.0"
          />
        </Head>
        <div className="h-screen dark dark:bg-black dark:text-white overscroll-auto lg:overscroll-contain">
          <Component {...pageProps} id="app" />
        </div>
      </Store>{" "}

CodePudding user response：

You must apply the styles to the body or :root (HTML) element. For the examples, I'll show them applied to the :root element.

You have two primary options in Next.js - global stylesheet or inline.

Global stylesheet with tailwind directives

Global styles

global.css

@tailwind base;

@layer base {
 :root {
  @apply dark:bg-black dark:text-white;
 }
}

inline class

To apply styles inline, you must create a custom _document page. Again, you can apply the styles to either the body or html tags.

_document.js

import { Html, Head, Main, NextScript } from 'next/document'

export default function Document() {
  return (
    <Html className="dark:bg-black dark:text-white">
      <Head />
      <body>
        <Main />
        <NextScript />
      </body>
    </Html>
  )
}

CodePudding user response：

I believe you need to add these classes to the <body> of the document, not just the main div.

There are a few ways to do add css classes to the body in NextJS, but one of the more common ways is to add it in a useEffect or componentDidMount of your Layout component depending on what kind it is.

For example:

useEffect(() => {
  document.querySelector("body").classList.add("dark dark:bg-black dark:text-white");
}, []);