When I develop web apps, I want to see adding and removing CSS classes in real time, like Chrome devtools do. I use tailwind CSS heavily (https://tailwindcss.com/) which relies on adding CSS classes to change appearance. The same applies to bootstrap 4 styles. Chrome devtools autoloads the CSS classes from tailwind, and shows updates to the page as I type. To try this out: 1. go to https://tailwindcss.com/ in chrome/chromium 2. open devtools (f12) 3. switch to the "Elements" tab 4. use the element picker to select the "Get Started" button 5. in the right hand panel, select the ".cls" icon 6. in the box that says "Add new class", type "text-" 7. notice the dropdown and if you change the value (e.g. to text-blue-500) the page updates In firefox devtools with the equivalent ".cls" feature: * the classes do not auto-populate * changes are not shown until the enter key is pressed. For me personally this is the only feature I use chrome for. Firefox completely satisfies me for all other usage. Is this something that can be implemented? I have reasonable software development skills so would be willing to assist with this change.