Adjusting the size of the comment box

I have looked throughout these treads for a fix that works on my site.

The comment box is just to big. When I right mouse on the comment box and bring up google developer tools, it references the following ” <textarea id=”comment” name=”comment” cols=”45″ rows=”8″ aria-required=”true”></textarea>”

I cant find this code anywhere. I have looked in the style.css, comments.php and pagetemplate.php. I cant find it anywhere. Can someone direct me to where this is. I just need to change row height from rows=8 to rows=4.

Thank you