dark theme website

1. css var

2. dark theme

3. prefers-color-scheme

https://developer.mozilla.org/en-US/docs/Web/CSS/@media/prefers-color-scheme

.day {
  background: #eee; color: black;
}
.night {
  background: #333; color: white;
}

@media (prefers-color-scheme: dark) {
  .day.dark-scheme   {
    background:  #333; color: white; 
  }
  .night.dark-scheme {
    background: black; color:  #ddd;
  }
}

@media (prefers-color-scheme: light) {
  .day.light-scheme   {
    background: white; color:  #555;
  }
  .night.light-scheme {
    background:  #eee; color: black;
  }
}

.day, .night {
  display: inline-block;
  padding: 1em;
  width: 7em;
  height: 2em;
  vertical-align: middle;
}

demos

https://zh-hans.single-spa.js.org/docs/examples/

https://create-react-app.dev/docs/getting-started/#creating-an-app

https://alligator.io/explore/

https://support.google.com/meet/?hl=zh-Hans&dark=1#topic&topic=7290350

https://support.google.com/meet/?hl=zh-Hans&dark=0#topic&topic=7290350

https://redux.js.org/introduction/getting-started

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extensions

https://darkreader.org/help/en/

html customize element & dark theme

https://codepen.io/xgqfrms/pen/eYJBBVB

https://developers.google.com/web/fundamentals/performance/critical-rendering-path/render-tree-construction?hl=zh-cn

js toggle theme

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