@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;
}

Source: developer.mozilla.org

Similar codes

0 vote270 views1 answer
Credimax
CSS
99 votes304 views6 answers
Css capitalize first letter
CSS
1 vote292 views1 answer
Input date icon width
CSS
2 votes303 views1 answer
Flexbox go to next row
CSS
2 votes286 views1 answer
Css no bottom ouline
CSS
22 votes285 views2 answers
Rgb gold color
CSS
0 vote276 views1 answer
Css button type
CSS
1 vote293 views1 answer
Cs and cd in jfet
CSS
10 votes281 views6 answers
Css bottom shadow
CSS
1 vote282 views1 answer
Display in flexbox
CSS