I have read another answer from another post about changing font size and color. I have a fair understanding of HTML. But having said that, I can't find the correct CSS file to manually edit to increase the height of the box. Having poked around within the C-Panel File Manager, under plugins, I see Contact Form 7. But the style sheet(s) I'm finding don't seem to contain the code that I am looking to change.
I would appreciate any assistance... I'm not proud! I accept help gratefully! Thanks.