Html show scroll only if bigger than max-height

Question

I wanna show scroll only if is bigger than max-height. But it seems the scroll is always enable

<div style="text-align: left; font-size: 1.5rem; max-height: 7rem; overflow-y: auto;">
  Some text
</div>

image example in my case

Answer 1

Use vh rather than using rem which is meant for font-size not for relative height:

Unit-Reference

div {
  text-align: left;
  font-size: 1.5rem;
  max-height: 10vh;
  overflow-y: auto;
  border: 1px solid red;
}

<div>
  Some text Before Oracle9 if I had "select any table" privileges there was no problem doing so. ... allow direct access to the v$ tables, do not allow access by stored procedures ... I don't think O7_DICTIONARY_ACCESSIBILITY provides access to sys.link$
  ... Before Oracle9 if I had "select any table" privileges there was no problem doing so. ... allow direct access to the v$ tables, do not allow access by stored procedures ... I don't think O7_DICTIONARY_ACCESSIBILITY provides access to sys.link$ ...
  https://jsfiddle.net/Manju06/3zshy8r0/34/ Before Oracle9 if I had "select any table" privileges there was no problem doing so. ... allow direct access to the v$ tables, do not allow access by stored procedures ... I don't think O7_DICTIONARY_ACCESSIBILITY
  provides access to sys.link$ ...
</div>