Css set variable

:root {
  --main-bg-color: coral;
}

#div1 {
  background-color: var(--main-bg-color);
}

#div2 {
  background-color: var(--main-bg-color);
}

Css variables

:root {
  --first-color: #16f;
  --second-color: #ff7;
}

#firstParagraph {
  background-color: var(--first-color);
  color: var(--second-color);
}

#secondParagraph {
  background-color: var(--second-color);
  color: var(--first-color);
}

#container {
  --first-color: #290;
}

#thirdParagraph {
  background-color: var(--first-color);
  color: var(--second-color);
}

Source: developer.mozilla.org

How to use variables in css

:root {
  --clr-primary-1: hsl(205, 86%, 17%);
}

.container{
  background-color: var(--clr-primary-3);
}

Similar codes

53 votes147 views4 answers
On hover css
CSS
0 vote146 views1 answer
Scroll x css
CSS
5 votes202 views3 answers
Bootstrap 4 classes list with description pdf
CSS Bootstrap
0 vote142 views1 answer
How to make img cover parent div
CSS
0 vote139 views1 answer
All the divs from inside of another div css
CSS
0 vote177 views1 answer
Css loading spinner with text
CSS
9 votes145 views2 answers
Css style for the first element only
CSS
1 vote115 views1 answer
Html hide text if too long
CSS
0 vote174 views1 answer
Fix scroll css position sticky
CSS
6 votes137 views6 answers
How to properly install tailwind css in react
CSS