title: Very simple : textarea with min height-rows and 100% height?
body: <p>I have a div containing a <code>textarea</code> element.<br>
  And I need to give it the right vertical size.  </p>
  
  <p>The container Div have right size. (100%)<br>
  I want to give a min-height or min rows, to provide a scroll if necessary, and a height of 100% (the 100 % of div).<br>
  I can't. I don't know how to do this. I need an example.</p>