When tailwindcss is shipped to production, the classes that is shipped is only the class that we use in the site (tree shaken). This addons will inject all of the default CSS from Tailwindcss CDN, and you can easily play around with tailwindcss classes.
A useful and handy tool that can let you ping anyone new on Whatsapp without the need of saving their number. Also, it keeps your privacy intact as you are not saving the number, so your profile pics, stories etc. remain private and not visible to the person