Ability to resize text fields "Description" & "Comments"

I would like to have the ability to resize text fields window size such as "Description" & "Comments".

Currently, the fields will get enlarged vertically to some extent we would like it to be extended freely for both Horizontally as well as vertically.

We use large images in the description and comment fields and we would like the field to either:

• Automatically resize according to the content E.g large image
• OR better yet, have a Full page button where it shows the field in a full-screen mode, something similar to video on youtube for example.

It would be great to have both options but we are okay with one.