How to create a simple expand / collapse more trigger for long text

Hi there - would love a little help with something simple here. I have long text which simply needs to be hidden and then shown with a ‘more/less’ button that sticks to the base. I’ve looked at the accordion and show/hide tutorials but they only appear to work to show/hide a new element ie another text box. Is there a way of simple expanding a div to show hidden content? Many thx

use an interaction to hide/show, scale or size the text div on click/hover

Screen Shot 2020-08-28 at 12.30.11 PM

aaah gotcha thx from the newbie