Is There Anything Like This?

Using Firefox Dev tools, I can search for elements, make changes to CSS etc easily. Obviously though, they don't save.

Is there any way of editing the website like this - making these changes permanent?

I.E Removing a

all I have to do is find it, right click it and delete. This is so easy!

This is the nearest Ive seen


or there is also the edit content onsite in design> themes