https://stackoverflow.com/questions/7168727/make-html-text-input-field-grow-as-i-type
https://css-tricks.com/auto-growing-inputs-textareas had an interesting solution that requires no library: https://codepen.io/shshaw/pen/bGNJJBE
Simplified here: https://codepen.io/michaeldimmitt/pen/mdGXgjy
In order to be simplified:
- Content editable needed two spaces to start out