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CSS - get property of another element

I wonder if it's possible to reference some elements using something like the Javascript DOM, without using Javascript or other programming languages.
This is what I mean. Suppose we have two divs that should be the same height. I would like the first div height to assign this to the second, for example:

#div1 {
    height:400px;
}

#div2 {
    height:#div1.height;
}

As you can see, I am doing exactly the same document.getElementById ("id"). style.height in Javascript.
Is it possible to do this? If not, I was wondering if there was a forum, a website, etc., to discuss CSS improvements or to get an idea of ​​this language development.
Thanks in advance!

+4
4

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+1

CSS Variable

index.html

<!DOCTYPE html>
<html>
    <head>
        <link rel="stylesheet" type="text/css" href="styles.css">
    </head>
    <body>
        <div id="div1">
            <p>This is div1</p>
        </div>
        <div id="div2">
            <p>This is div2</p>
        </div>
    </body>
</html>

styles.css

body{
  --div-height:400px;
}

#div1 {
  height:var(--div-height);
}

#div2 {
  height:var(--div-height);
}

-div-height , css.

+4

It's impossible. You will need to use JS and DOM.

+1
source

Use CSS Flexbox ....

Check out this tutorial  and this demo .

.container {
  align-items: stretch;
}
+1
source

Source: https://habr.com/ru/post/1672867/

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