The core argument for tailwind is that it won't just be "make the approved text white on blue instead of white on green". Maybe you'll get "make the approved text a bubble with a checkmark on the left and make the title two lines where the second line is ..."

Frequently the change needed requires changing the html as well as the css (or maybe awkward advanced css). So you may as use a library/framework that lets you write an Approved component. At that point it's better to have the css and html for the Approved component in its own file as when you're updating the style you'll need to change some mixture of the html and css.

Without components tailwind is probably a bad choice.