Do the min-height, min-width, max-height, max-width properties always have a fixed value?

Question

css

As far as I understand the values ​​of these properties are always set in pixels.
Are there situations where they are given in relative terms?
If yes, can you show an example.

Answer 1

However, it's acceptable to set min-height and height when the values ​​are different units:

#example {
  min-height: 3em;
  height: 138px;
}

Here, the min-height declaration is based on em, which means that at some stage (due to text resizing) the em height may be larger than the 138px height we've set. In cases such as this, the element will be allowed to expand further than the 138px height, thus accommodating the resizing of the em-based text.

reference.sitepoint.com/css/min-height
https://developer.mozilla.org/en/docs/Web/CSS/max-...
https://css-tricks.com/almanac/properties/m/ max-height/
Lots of info.

Answer 2

I love Friday questions.
Of course, you can use it, and sometimes you even need to.
But to sit and think "How can this be applied?" not for fun.
If you don't need it, why ask at all?